*SET-U

English word origin

Etymology of crust

Etymology tree Proto-Indo-European *krews- Proto-Indo-European *-tós Proto-Indo-European *krustós Proto-Italic *krustosder. Latin crusta Anglo-Norman crustebor. Middle English cruste English crust From Middle English cru

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In this entry · 1 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

Original entry ↗
verb

To cover with a crust. · To form a crust.

noun

A more solid, dense or hard layer on a surface or boundary. · The external, hardened layer of certain foodstuffs, including most types of bread, fried meat, etc. · An outer layer composed of pastry · The bread-like base of a pizza.

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

Etymology tree Proto-Indo-European *krews- Proto-Indo-European *-tós Proto-Indo-European *krustós Proto-Italic *krustosder. Latin crusta Anglo-Norman crustebor. Middle English cruste English crust From Middle English cruste, from Anglo-Norman and Old French cruste, from Latin crusta (“hard outer covering”), from Proto-Indo-European *krustós (“hardened”), from *krews- (“to form a crust, begin to freeze”), related to Old Norse hroðr (“scurf”), Old English hruse (“earth”), Old High German hrosa (“crust, ice”), Latvian kruvesis (“frozen mud”), Ancient Greek κρύος (krúos, “frost, icy cold”), κρύσταλλος (krústallos, “crystal, ice”), Avestan 𐬑𐬭𐬎𐬰𐬛𐬭𐬀- (xruzdra-, “hard”), Sanskrit क्रूड् (krūḍ, “thicken, make hard”). Doublet of crusta.

Relationships mentioned by the source

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

This page abbreviates 8 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": "ety",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:cruste",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *krews-\nProto-Indo-European *-tós\nProto-Indo-European *krustós\nProto-Italic *krustosder.\nLatin crusta\nAnglo-Norman crustebor.\nMiddle English cruste\nEnglish crust\n[Appendix:Glossary#loanword|Borrowed]] from\", \"terms\" : [ { \"children\" : [ { \"terms\" : [ { \"children\" : [ { \"keyword_abbrev\" : \"der.\", \"keyword_label\" : \"Derived from\", \"terms\" : [ { \"alt\" : \"*krustos\", \"lang_name\" : \"Proto-Italic\", \"status\" : \"inline\", \"children\" : [ { \"terms\" : [ { \"alt\" : \"*krustós\", \"lang_name\" : \"Proto-Indo-European\", \"status\" : \"inline\", \"children\" : [ { \"terms\" : [ { \"id\" : \"freeze\", \"children\" : [ ], \"status\" : \"ok\", \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*krews-\", \"lang\" : \"ine-pro\" }, { \"children\" : [ ], \"lang_name\" : \"Proto-Indo-European\", \"term\" : \"*-tós\", \"status\" : \"ok\", \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"From\", \"is_group\" : true, \"keyword\" : \"affix\" } ], \"lang\" : \"ine-pro\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang\" : \"itc-pro\" } ], \"keyword\" : \"derived\" } ], \"lang_name\" : \"Latin\", \"term\" : \"crusta\", \"status\" : \"ok\", \"lang\" : \"la\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"Anglo-Norman\", \"term\" : \"cruste\", \"status\" : \"ok\", \"lang\" : \"xno\" } ], \"keyword\" : \"bor\" } ], \"lang_name\" : \"Middle English\", \"term\" : \"cruste\", \"status\" : \"ok\", \"lang\" : \"enm\" } ], \"keyword_label\" : \"Inherited from\", \"keyword\" : \"inherited\" } ], \"lang_name\" : \"English\", \"term\" : \"crust\", \"status\" : \"ok\", \"lang\" : \"en\" }\" data-lang=\"en\" data-title=\"crust\">"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "cruste"
      },
      "expansion": "Middle English cruste"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "xno",
        "3": "-"
      },
      "expansion": "Anglo-Norman"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "fro",
        "3": "cruste"
      },
      "expansion": "Old French cruste"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "la",
        "3": "crusta",
        "4": "",
        "5": "hard outer covering"
      },
      "expansion": "Latin crusta (“hard outer covering”)"
    },
    {
      "name": "der",
      "args": {
        "1": "en",
        "2": "ine-pro",
        "3": "*krustós",
        "4": "",
        "5": "hardened"
      },
      "expansion": "Proto-Indo-European *krustós (“hardened”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "non",
        "2": "hroðr",
        "3": "",
        "4": "scurf"
      },
      "expansion": "Old Norse hroðr (“scurf”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "ang",
        "2": "hruse",
        "3": "",
        "4": "earth"
      },
      "expansion": "Old English hruse (“earth”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "goh",
        "2": "hrosa",
        "3": "",
        "4": "crust, ice"
      },
      "expansion": "Old High German hrosa (“crust, ice”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "lv",
        "2": "kruvesis",
        "3": "",
        "4": "frozen mud"
      },
      "expansion": "Latvian kruvesis (“frozen mud”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "grc",
        "2": "κρύος",
        "3": "",
        "4": "frost, icy cold"
      },
      "expansion": "Ancient Greek κρύος (krúos, “frost, icy cold”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "ae",
        "2": "𐬑𐬭𐬎𐬰𐬛𐬭𐬀-",
        "t": "hard"
      },
      "expansion": "Avestan 𐬑𐬭𐬎𐬰𐬛𐬭𐬀- (xruzdra-, “hard”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "sa",
        "2": "क्रूड्",
        "3": "",
        "4": "thicken, make hard"
      },
      "expansion": "Sanskrit क्रूड् (krūḍ, “thicken, make hard”)"
    },
    {
      "name": "doublet",
      "args": {
        "1": "en",
        "2": "crusta"
      },
      "expansion": "Doublet of crusta"
    },
    {
      "name": "ety",
      "args": {
        "1": "en",
        "2": ":inh",
        "3": "enm:cruste",
        "tree": "1"
      },
      "expansion": "Etymology tree\nProto-Indo-European *krews-\nProto-Indo-European *-tós\nProto-Indo-European *krustós\nProto-Italic *krustosder.\nLatin crusta\nAnglo-Norman crustebor.\nMiddle English cruste\nEnglish crust"
    }
  ],
  "links": [
    [
      "*krews-",
      "Reconstruction:Proto-Indo-European/krews-#Proto-Indo-European:_freeze"
    ],
    [
      "*-tós",
      "Reconstruction:Proto-Indo-European/-tós"
    ],
    [
      "crusta",
      "crusta#Latin"
    ],
    [
      "cruste",
      "cruste#Old_French"
    ],
    [
      "cruste",
      "cruste#Middle_English"
    ],
    [
      "cruste",
      "cruste#Middle_English"
    ],
    [
      "cruste",
      "cruste#Old_French"
    ],
    [
      "crusta",
      "crusta#Latin"
    ],
    [
      "*krustós",
      "Reconstruction:Proto-Indo-European/krustós"
    ],
    [
      "*krews-",
      "Reconstruction:Proto-Indo-European/krews-"
    ],
    [
      "hroðr",
      "hroðr#Old_Norse"
    ],
    [
      "hruse",
      "hruse#Old_English"
    ],
    [
      "hrosa",
      "hrosa#Old_High_German"
    ],
    [
      "kruvesis",
      "kruvesis#Latvian"
    ],
    [
      "κρύος",
      "κρύος#Ancient_Greek"
    ],
    [
      "κρύσταλλος",
      "κρύσταλλος#Ancient_Greek"
    ],
    [
      "𐬑𐬭𐬎𐬰𐬛𐬭𐬀-",
      "𐬑𐬭𐬎𐬰𐬛𐬭𐬀-#Avestan"
    ],
    [
      "क्रूड्",
      "क्रूड्#Sanskrit"
    ],
    [
      "crusta",
      "crusta#English"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
    {
      "pos": "verb",
      "glosses": [
        "To cover with a crust.",
        "To form a crust."
      ],
      "tags": [
        "transitive",
        "intransitive"
      ],
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    {
      "pos": "noun",
      "glosses": [
        "A more solid, dense or hard layer on a surface or boundary.",
        "The external, hardened layer of certain foodstuffs, including most types of bread, fried meat, etc.",
        "An outer layer composed of pastry",
        "The bread-like base of a pizza."
      ],
      "tags": [
        "countable",
        "uncountable"
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      "sourceRecordOrdinal": 163555
    }
  ],
  "omittedAuxiliaryFields": {
    "templates": 0,
    "links": 0,
    "references": 0,
    "descendants": 0,
    "lexicalRecords": 0,
    "lexicalSenses": 8,
    "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 crust →

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
5ff2c072f8099f2d2ce484bd6957bf179f046d2ad37bc36555edf8bb84cb5291
Import run
73216b9a9b78ed3830994bf853103716f5a4dc57099e371e9f8fdc468facca26
Permanent entry ID
w-Y3J1c3Q