*SET-U

English word origin

Etymology of flask

From Middle English flask, flaske (“case, cask, keg”), from Old English flasce, flaxe (“bottle, flask”) and Medieval Latin flascō (“bottle”); from Frankish *flaskā; both from Proto-Germanic *flaskǭ (“braid-covered bottle

2 source sectionsExtended source reportWiktionary original ↗
In this entry · 2 source sections

The source etymologies

Wiktionary via Kaikki / Wiktextract

The source reports below are imported and unreviewed by *SET-U. Separate numbered origins and differing source variants are preserved; agreement within this extraction is not independent corroboration.

Unnumbered source etymology · variant 1/2

Original entry ↗
verb

To invest a denture in a flask so as to produce a sectional mold.

Selected source glosses provide context, not a complete modern definition inventory

From Middle English flask, flaske (“case, cask, keg”), from Old English flasce, flaxe (“bottle, flask”) and Medieval Latin flascō (“bottle”); from Frankish *flaskā; both from Proto-Germanic *flaskǭ (“braid-covered bottle, wicker-enclosed jug”), from Proto-Indo-European *ploḱ-skō (“flat”), or from Proto-Indo-European *pleḱ- (“to weave”). Doublet of fiasco, flacon, and flagon. Related to Dutch fles; also German Low German Flaske, Fless, German Flasche, Danish flaske; also Lithuanian plókščias, Czech ploský, Albanian flashkët. The sense “laboratory glassware” is from Italian fiasco, and the sense “container for holding a casting mold” is from Middle French flasque (“powder flask”), itself from Old Spanish flasco, frasco, both from Late Latin above.

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

{
  "templates": [
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "flask"
      },
      "expansion": "Middle English flask"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "flasce"
      },
      "expansion": "Old English flasce"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la-med",
        "3": "flascō",
        "4": "",
        "5": "bottle"
      },
      "expansion": "Medieval Latin flascō (“bottle”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "frk",
        "3": "*flaskā"
      },
      "expansion": "Frankish *flaskā"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*flaskǭ",
        "4": "",
        "5": "braid-covered bottle, wicker-enclosed jug"
      },
      "expansion": "Proto-Germanic *flaskǭ (“braid-covered bottle, wicker-enclosed jug”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*ploḱ-skō",
        "4": "",
        "5": "flat"
      },
      "expansion": "Proto-Indo-European *ploḱ-skō (“flat”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*pleḱ-",
        "4": "",
        "5": "to weave"
      },
      "expansion": "Proto-Indo-European *pleḱ- (“to weave”)"
    },
    {
      "name": "doublet",
      "args": {
        "1": "en",
        "2": "fiasco",
        "3": "flacon",
        "4": "flagon"
      },
      "expansion": "Doublet of fiasco, flacon, and flagon"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "fles"
      },
      "expansion": "Dutch fles"
    },
    {
      "name": "cog",
      "args": {
        "1": "nds-de",
        "2": "Flaske"
      },
      "expansion": "German Low German Flaske"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Flasche"
      },
      "expansion": "German Flasche"
    },
    {
      "name": "cog",
      "args": {
        "1": "da",
        "2": "flaske"
      },
      "expansion": "Danish flaske"
    },
    {
      "name": "cog",
      "args": {
        "1": "lt",
        "2": "plókščias"
      },
      "expansion": "Lithuanian plókščias"
    },
    {
      "name": "cog",
      "args": {
        "1": "cs",
        "2": "ploský"
      },
      "expansion": "Czech ploský"
    },
    {
      "name": "cog",
      "args": {
        "1": "sq",
        "2": "flashkët"
      },
      "expansion": "Albanian flashkët"
    },
    {
      "name": "m-g",
      "args": {
        "1": "laboratory glassware"
      },
      "expansion": "“laboratory glassware”"
    },
    {
      "name": "bor",
      "args": {
        "1": "en",
        "2": "it",
        "3": "fiasco"
      },
      "expansion": "Italian fiasco"
    },
    {
      "name": "m-g",
      "args": {
        "1": "container for holding a casting mold"
      },
      "expansion": "“container for holding a casting mold”"
    },
    {
      "name": "bor",
      "args": {
        "1": "en",
        "2": "frm",
        "3": "flasque",
        "4": "",
        "5": "powder flask"
      },
      "expansion": "Middle French flasque (“powder flask”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "osp",
        "2": "flasco"
      },
      "expansion": "Old Spanish flasco"
    }
  ],
  "links": [
    [
      "flask",
      "flask#Middle_English"
    ],
    [
      "flaske",
      "flaske#Middle_English"
    ],
    [
      "flasce",
      "flasce#Old_English"
    ],
    [
      "flaxe",
      "flaxe#Old_English"
    ],
    [
      "flascō",
      "flasco#Latin"
    ],
    [
      "*flaskā",
      "Reconstruction:Proto-West Germanic/flaskā"
    ],
    [
      "*flaskǭ",
      "Reconstruction:Proto-Germanic/flaskǭ"
    ],
    [
      "*ploḱ-skō",
      "Reconstruction:Proto-Indo-European/ploḱ-skō"
    ],
    [
      "*pleḱ-",
      "Reconstruction:Proto-Indo-European/pleḱ-"
    ],
    [
      "fiasco",
      "fiasco#English"
    ],
    [
      "flacon",
      "flacon#English"
    ],
    [
      "flagon",
      "flagon#English"
    ],
    [
      "fles",
      "fles#Dutch"
    ],
    [
      "Flaske",
      "Flaske#Low_German"
    ],
    [
      "Fless",
      "Fless#Low_German"
    ],
    [
      "Flasche",
      "Flasche#German"
    ],
    [
      "flaske",
      "flaske#Danish"
    ],
    [
      "plókščias",
      "plokščias#Lithuanian"
    ],
    [
      "ploský",
      "ploský#Czech"
    ],
    [
      "flashkët",
      "flashkët#Albanian"
    ],
    [
      "fiasco",
      "fiasco#Italian"
    ],
    [
      "flasque",
      "flasque#Middle_French"
    ],
    [
      "flasco",
      "flasco#Old_Spanish"
    ],
    [
      "frasco",
      "frasco#Old_Spanish"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "To invest a denture in a flask so as to produce a sectional mold."
      ],
      "tags": [],
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  "omittedAuxiliaryFields": {
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}

Unnumbered source etymology · variant 2/2

Original entry ↗
noun

A narrow-necked vessel of metal or glass, used for various purposes; as of sheet metal, to carry gunpowder in; or of wrought iron, to contain quicksilver; or of glass, to heat water in, etc. · A container used to discreetly carry a small amount of a hard alcoholic beverage; a pocket flask. · Laboratory glassware used to hold larger volumes than test tubes, normally having a narrow mouth of a standard size which widens to a flat or spherical base. · A container for holding a casting mold, especially for sand casting molds.

Selected source glosses provide context, not a complete modern definition inventory

From Middle English flask, flaske (“case, cask, keg”), from Old English flasce, flaxe (“bottle, flask”) and Medieval Latin flascō (“bottle”); from Frankish *flaskā; both from Proto-Germanic *flaskǭ (“braid-covered bottle, wicker-enclosed jug”), from Proto-Indo-European *ploḱ-skō (“flat”), or from Proto-Indo-European *pleḱ- (“to weave”). Doublet of fiasco, flacon, and flagon. Related to Dutch fles; also German Low German Flaske, Fless, German Flasche, Danish flaske; also Lithuanian plókščias, Czech ploský, Albanian flashkët. The sense “laboratory glassware” is from Italian fiasco, and the sense “container for holding a casting mold” is from Middle French flasque (“powder flask”), itself from Old Spanish flasco, frasco, both from Late Latin above.

Relationships mentioned by the source

These are extracted mentions, not a timeline or a verified sequence of immediate parents.

This page abbreviates 3 auxiliary source items. The etymology narrative is not shortened. Omission counts are available in the audit fields below; consult the original for complete auxiliary material.

Inspect preserved source fields

Raw extraction fields are retained for auditing. Their order does not establish ancestry.

{
  "templates": [
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "flask"
      },
      "expansion": "Middle English flask"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "flasce"
      },
      "expansion": "Old English flasce"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la-med",
        "3": "flascō",
        "4": "",
        "5": "bottle"
      },
      "expansion": "Medieval Latin flascō (“bottle”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "frk",
        "3": "*flaskā"
      },
      "expansion": "Frankish *flaskā"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "gem-pro",
        "3": "*flaskǭ",
        "4": "",
        "5": "braid-covered bottle, wicker-enclosed jug"
      },
      "expansion": "Proto-Germanic *flaskǭ (“braid-covered bottle, wicker-enclosed jug”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*ploḱ-skō",
        "4": "",
        "5": "flat"
      },
      "expansion": "Proto-Indo-European *ploḱ-skō (“flat”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*pleḱ-",
        "4": "",
        "5": "to weave"
      },
      "expansion": "Proto-Indo-European *pleḱ- (“to weave”)"
    },
    {
      "name": "doublet",
      "args": {
        "1": "en",
        "2": "fiasco",
        "3": "flacon",
        "4": "flagon"
      },
      "expansion": "Doublet of fiasco, flacon, and flagon"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "fles"
      },
      "expansion": "Dutch fles"
    },
    {
      "name": "cog",
      "args": {
        "1": "nds-de",
        "2": "Flaske"
      },
      "expansion": "German Low German Flaske"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Flasche"
      },
      "expansion": "German Flasche"
    },
    {
      "name": "cog",
      "args": {
        "1": "da",
        "2": "flaske"
      },
      "expansion": "Danish flaske"
    },
    {
      "name": "cog",
      "args": {
        "1": "lt",
        "2": "plókščias"
      },
      "expansion": "Lithuanian plókščias"
    },
    {
      "name": "cog",
      "args": {
        "1": "cs",
        "2": "ploský"
      },
      "expansion": "Czech ploský"
    },
    {
      "name": "cog",
      "args": {
        "1": "sq",
        "2": "flashkët"
      },
      "expansion": "Albanian flashkët"
    },
    {
      "name": "m-g",
      "args": {
        "1": "laboratory glassware"
      },
      "expansion": "“laboratory glassware”"
    },
    {
      "name": "bor",
      "args": {
        "1": "en",
        "2": "it",
        "3": "fiasco"
      },
      "expansion": "Italian fiasco"
    },
    {
      "name": "m-g",
      "args": {
        "1": "container for holding a casting mold"
      },
      "expansion": "“container for holding a casting mold”"
    },
    {
      "name": "bor",
      "args": {
        "1": "en",
        "2": "frm",
        "3": "flasque",
        "4": "",
        "5": "powder flask"
      },
      "expansion": "Middle French flasque (“powder flask”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "osp",
        "2": "flasco"
      },
      "expansion": "Old Spanish flasco"
    }
  ],
  "links": [
    [
      "flask",
      "flask#Middle_English"
    ],
    [
      "flaske",
      "flaske#Middle_English"
    ],
    [
      "flasce",
      "flasce#Old_English"
    ],
    [
      "flaxe",
      "flaxe#Old_English"
    ],
    [
      "flascō",
      "flasco#Latin"
    ],
    [
      "*flaskā",
      "Reconstruction:Proto-West Germanic/flaskā"
    ],
    [
      "*flaskǭ",
      "Reconstruction:Proto-Germanic/flaskǭ"
    ],
    [
      "*ploḱ-skō",
      "Reconstruction:Proto-Indo-European/ploḱ-skō"
    ],
    [
      "*pleḱ-",
      "Reconstruction:Proto-Indo-European/pleḱ-"
    ],
    [
      "fiasco",
      "fiasco#English"
    ],
    [
      "flacon",
      "flacon#English"
    ],
    [
      "flagon",
      "flagon#English"
    ],
    [
      "fles",
      "fles#Dutch"
    ],
    [
      "Flaske",
      "Flaske#Low_German"
    ],
    [
      "Fless",
      "Fless#Low_German"
    ],
    [
      "Flasche",
      "Flasche#German"
    ],
    [
      "flaske",
      "flaske#Danish"
    ],
    [
      "plókščias",
      "plokščias#Lithuanian"
    ],
    [
      "ploský",
      "ploský#Czech"
    ],
    [
      "flashkët",
      "flashkët#Albanian"
    ],
    [
      "fiasco",
      "fiasco#Italian"
    ],
    [
      "flasque",
      "flasque#Middle_French"
    ],
    [
      "flasco",
      "flasco#Old_Spanish"
    ],
    [
      "frasco",
      "frasco#Old_Spanish"
    ]
  ],
  "references": [],
  "descendants": [
    {
      "lang": "Irish",
      "lang_code": "ga",
      "word": "fleasc",
      "raw_tags": [
        "borrowed"
      ]
    },
    {
      "lang": "Welsh",
      "lang_code": "cy",
      "word": "fflasg",
      "raw_tags": [
        "borrowed"
      ]
    }
  ],
  "lexical": [
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      "pos": "noun",
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        "A narrow-necked vessel of metal or glass, used for various purposes; as of sheet metal, to carry gunpowder in; or of wrought iron, to contain quicksilver; or of glass, to heat water in, etc.",
        "A container used to discreetly carry a small amount of a hard alcoholic beverage; a pocket flask.",
        "Laboratory glassware used to hold larger volumes than test tubes, normally having a narrow mouth of a standard size which widens to a flat or spherical base.",
        "A container for holding a casting mold, especially for sand casting molds."
      ],
      "tags": [],
      "recordId": "56e05d7301571da4aee3b35da5cd9754bafca1abe607c1ec0a1adbf87f0c87ee",
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    "lexicalRecords": 0,
    "lexicalSenses": 3,
    "glosses": 0
  }
}

Where this record stops

This page does not supply an independently verified sound-change sequence, first-use manuscript or complete family tree unless a cited analysis explicitly establishes one. Missing detail here is a limit of this record—not a claim that humanity knows nothing more.

An older meaning does not determine what a word must mean today. Follow the sources, preserve disagreements, and keep ancestry separate from interpretation.

Contribute located evidence for flask →

Source and snapshot

Imported from Wiktionary contributors; extracted by Tatu Ylonen / Wiktextract / Kaikki.org. Selected fields are reformatted and grouped; wording, source identity and etymology sections are retained. CC-BY-SA-4.0 applies to the imported source material.

Dump: 2026-10-01 · Extracted: 2026-10-30. These are snapshot dates, not the word’s first attestation or the page’s revision date.

Source entry and bibliography ↗Wiktionary revision history ↗Acquisition and rights ledger
Machine-source provenance
Source SHA-256
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Import run
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Permanent entry ID
w-Zmxhc2s