*SET-U

English word origin

Etymology of brass

From Middle English bras, bres, from Old English bræs (“brass, bronze”), of uncertain origin. Perhaps representing a backformation from Proto-Germanic *brasnaz (“brazen”), from or related to *brasō (“fire, pyre”). Compar

4 source sectionsExtended source reportWiktionary original ↗
In this entry · 4 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.

Source etymology 1 · variant 1/2

Original entry ↗
verb

To coat with brass.

adj

Made of brass, of or pertaining to brass. · Of the color of brass. · Impertinent, bold: brazen. · Bad, annoying; as wordplay applied especially to brass instruments.

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

From Middle English bras, bres, from Old English bræs (“brass, bronze”), of uncertain origin. Perhaps representing a backformation from Proto-Germanic *brasnaz (“brazen”), from or related to *brasō (“fire, pyre”). Compare Old Norse and Icelandic bras (“solder”), Icelandic brasa (“to harden in the fire”), Swedish brasa (“a small controlled fire”), Danish brase (“to fry”); French braser ("to solder"; > English braise) from the same Germanic root. Compare also Middle Dutch braspenninc ("a silver coin", literally, "silver-penny"; > Dutch braspenning), Old Frisian bress (“copper”), Middle Low German bras (“metal, ore”). In the military sense an ellipsis of the brass hats.

Relationships mentioned by the source

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

This page abbreviates 1 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.

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      "name": "inh",
      "args": {
        "1": "en",
        "2": "enm",
        "3": "bras, bres"
      },
      "expansion": "Middle English bras, bres"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "bræs",
        "4": "",
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      },
      "expansion": "Old English bræs (“brass, bronze”)"
    },
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        "4": "",
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      },
      "expansion": "Proto-Germanic *brasnaz (“brazen”)"
    },
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      "name": "gloss",
      "args": {
        "1": "\"to solder\"; > English <i class=\"Latn mention\" lang=\"en\">braise</i>"
      },
      "expansion": "(\"to solder\"; > English braise)"
    },
    {
      "name": "cog",
      "args": {
        "1": "gem"
      },
      "expansion": "Germanic"
    },
    {
      "name": "cog",
      "args": {
        "1": "dum",
        "2": "braspenninc"
      },
      "expansion": "Middle Dutch braspenninc"
    },
    {
      "name": "gloss",
      "args": {
        "1": "\"a silver coin\", literally, \"silver-penny\"; > Dutch <i class=\"Latn mention\" lang=\"nl\">braspenning</i>"
      },
      "expansion": "(\"a silver coin\", literally, \"silver-penny\"; > Dutch braspenning)"
    },
    {
      "name": "ellipsis",
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        "3": "the brass hats",
        "nocap": "1"
      },
      "expansion": "ellipsis of the brass hats"
    }
  ],
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      "bras",
      "bras#Middle_English"
    ],
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      "bres",
      "bres#Middle_English"
    ],
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      "bræs",
      "bræs#Old_English"
    ],
    [
      "*brasnaz",
      "Reconstruction:Proto-Germanic/brasnaz"
    ],
    [
      "*brasō",
      "Reconstruction:Proto-Germanic/brasō"
    ],
    [
      "bras",
      "bras#Icelandic"
    ],
    [
      "brasa",
      "brasa#Icelandic"
    ],
    [
      "brasa",
      "brasa#Swedish"
    ],
    [
      "brase",
      "brase#Danish"
    ],
    [
      "braser",
      "braser#French"
    ],
    [
      "braise",
      "braise#English"
    ],
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      "braspenninc",
      "braspenninc#Middle_Dutch"
    ],
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      "braspenning",
      "braspenning#Dutch"
    ],
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      "bress",
      "bress#Old_Frisian"
    ],
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      "bras",
      "bras#Middle_Low_German"
    ],
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      "the brass hats",
      "brass hat#English"
    ]
  ],
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        "To coat with brass."
      ],
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Source etymology 1 · variant 2/2

Original entry ↗
noun

A memorial or sepulchral tablet usually made of brass or latten: a monumental brass. · Fittings, utensils, or other items made of brass. · A class of wind instruments, usually made of metal (such as brass), that use vibrations of the player's lips to produce sound; a band or the section of an orchestra that features such instruments. · Spent cartridge casings (usually made of brass): the part of the cartridge left over after bullets or shells have been fired.

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

From Middle English bras, bres, from Old English bræs (“brass, bronze”), of uncertain origin. Perhaps representing a backformation from Proto-Germanic *brasnaz (“brazen”), from or related to *brasō (“fire, pyre”). Compare Old Norse and Icelandic bras (“solder”), Icelandic brasa (“to harden in the fire”), Swedish brasa (“a small controlled fire”), Danish brase (“to fry”); French braser ("to solder"; > English braise) from the same Germanic root. Compare also Middle Dutch braspenninc ("a silver coin", literally, "silver-penny"; > Dutch braspenning), Old Frisian bress (“copper”), Middle Low German bras (“metal, ore”). In the military sense an ellipsis of the brass hats.

Relationships mentioned by the source

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

This page abbreviates 5 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": "bras, bres"
      },
      "expansion": "Middle English bras, bres"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "bræs",
        "4": "",
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    },
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    },
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      },
      "expansion": "(\"to solder\"; > English braise)"
    },
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      },
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    },
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        "1": "dum",
        "2": "braspenninc"
      },
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    },
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      "name": "gloss",
      "args": {
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      },
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    },
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    }
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    ],
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      "bræs#Old_English"
    ],
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    ],
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      "Reconstruction:Proto-Germanic/brasō"
    ],
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      "bras",
      "bras#Icelandic"
    ],
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      "brasa",
      "brasa#Icelandic"
    ],
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      "brasa",
      "brasa#Swedish"
    ],
    [
      "brase",
      "brase#Danish"
    ],
    [
      "braser",
      "braser#French"
    ],
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      "braise",
      "braise#English"
    ],
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      "braspenninc",
      "braspenninc#Middle_Dutch"
    ],
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      "braspenning",
      "braspenning#Dutch"
    ],
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      "bress",
      "bress#Old_Frisian"
    ],
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      "bras",
      "bras#Middle_Low_German"
    ],
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      "the brass hats",
      "brass hat#English"
    ]
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      "lang_code": "bi",
      "word": "bras"
    },
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      "lang_code": "tpi",
      "word": "bras"
    }
  ],
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        "Fittings, utensils, or other items made of brass.",
        "A class of wind instruments, usually made of metal (such as brass), that use vibrations of the player's lips to produce sound; a band or the section of an orchestra that features such instruments.",
        "Spent cartridge casings (usually made of brass): the part of the cartridge left over after bullets or shells have been fired."
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Source etymology 2

Original entry ↗
adj

Brass monkey; cold.

noun

A prostitute.

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

By ellipsis from brass nail, in turn from "nail[ing]" (fig.) and "brass blonde" (see "brazen"); and also shortened from Cockney Rhyming slang brass flute for "prostitute".

Inspect preserved source fields

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

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      "brass nail",
      "brass nail#English"
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      "brass flute",
      "brass flute#English"
    ]
  ],
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      "pos": "adj",
      "glosses": [
        "Brass monkey; cold."
      ],
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Source etymology 3

Original entry ↗
noun

Synonym of brace, a traditional unit of measure equivalent to a fathom (6 feet) or about 1.6 m, especially as the Spanish braza and Portuguese braça, also French brasse.

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

From Portuguese braça and Spanish braza, from Old Galician-Portuguese and Old Spanish braça, from Latin brachia, variant of bracchium (“arm, cubit”), from Ancient Greek βραχίων (brakhíōn, “upper arm”).

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.

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        "1": "en",
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      },
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    },
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        "3": "braza"
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    },
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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 brass →

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
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