*SET-U

English word origin

Etymology of thorn

From Middle English thorn, þorn, from Old English þorn, from Proto-West Germanic *þorn, from Proto-Germanic *þurnaz, from Proto-Indo-European *tr̥nós, from *(s)ter- (“stiff”). Cognates Near cognates include West Frisian

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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 pierce with, or as if with, a thorn (sharp pointed object).

noun

A modified branch that is hard and sharp like a spike. · Any thorn-like structure on plants, such as the spine and the prickle. · Any shrub or small tree that bears thorns, especially a hawthorn. · That which pricks or annoys; anything troublesome.

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

From Middle English thorn, þorn, from Old English þorn, from Proto-West Germanic *þorn, from Proto-Germanic *þurnaz, from Proto-Indo-European *tr̥nós, from *(s)ter- (“stiff”). Cognates Near cognates include West Frisian toarn, Low German Doorn, Dutch doorn, German Dorn, Danish and Norwegian torn, Swedish torn, törne, Gothic 𐌸𐌰𐌿𐍂𐌽𐌿𐍃 (þaurnus). Further cognates include Old Church Slavonic трънъ (trŭnŭ, “thorn”), Russian тёрн (tjorn), Polish cierń, Kamkata-viri taňi, tai (“thorn”), Sanskrit तृण (tṛ́ṇa, “grass”).

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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        "2": "enm",
        "3": "thorn"
      },
      "expansion": "Middle English thorn"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "ang",
        "3": "þorn"
      },
      "expansion": "Old English þorn"
    },
    {
      "name": "inh",
      "args": {
        "1": "en",
        "2": "gmw-pro",
        "3": "*þorn"
      },
      "expansion": "Proto-West Germanic *þorn"
    },
    {
      "name": "inh",
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      "args": {
        "1": "fy",
        "2": "toarn"
      },
      "expansion": "West Frisian toarn"
    },
    {
      "name": "cog",
      "args": {
        "1": "nds",
        "2": "Doorn"
      },
      "expansion": "Low German Doorn"
    },
    {
      "name": "cog",
      "args": {
        "1": "nl",
        "2": "doorn"
      },
      "expansion": "Dutch doorn"
    },
    {
      "name": "cog",
      "args": {
        "1": "de",
        "2": "Dorn"
      },
      "expansion": "German Dorn"
    },
    {
      "name": "cog",
      "args": {
        "1": "da",
        "2": "-"
      },
      "expansion": "Danish"
    },
    {
      "name": "cog",
      "args": {
        "1": "no",
        "2": "-"
      },
      "expansion": "Norwegian"
    },
    {
      "name": "cog",
      "args": {
        "1": "sv",
        "2": "torn"
      },
      "expansion": "Swedish torn"
    },
    {
      "name": "cog",
      "args": {
        "1": "got",
        "2": "𐌸𐌰𐌿𐍂𐌽𐌿𐍃"
      },
      "expansion": "Gothic 𐌸𐌰𐌿𐍂𐌽𐌿𐍃 (þaurnus)"
    },
    {
      "name": "cog",
      "args": {
        "1": "cu",
        "2": "трънъ",
        "3": "",
        "4": "thorn"
      },
      "expansion": "Old Church Slavonic трънъ (trŭnŭ, “thorn”)"
    },
    {
      "name": "cog",
      "args": {
        "1": "ru",
        "2": "тёрн"
      },
      "expansion": "Russian тёрн (tjorn)"
    },
    {
      "name": "cog",
      "args": {
        "1": "pl",
        "2": "cierń"
      },
      "expansion": "Polish cierń"
    },
    {
      "name": "cog",
      "args": {
        "1": "bsh",
        "2": "taňi"
      },
      "expansion": "Kamkata-viri taňi"
    },
    {
      "name": "cog",
      "args": {
        "1": "sa",
        "2": "तृण",
        "tr": "tṛ́ṇa",
        "t": "grass"
      },
      "expansion": "Sanskrit तृण (tṛ́ṇa, “grass”)"
    }
  ],
  "links": [
    [
      "thorn",
      "thorn#Middle_English"
    ],
    [
      "þorn",
      "þorn#Middle_English"
    ],
    [
      "þorn",
      "þorn#Old_English"
    ],
    [
      "*þorn",
      "Reconstruction:Proto-West Germanic/þorn"
    ],
    [
      "*þurnaz",
      "Reconstruction:Proto-Germanic/þurnaz"
    ],
    [
      "*tr̥nós",
      "Reconstruction:Proto-Indo-European/tr̥nós"
    ],
    [
      "*(s)ter-",
      "Reconstruction:Proto-Indo-European/(s)ter-"
    ],
    [
      "toarn",
      "toarn#West_Frisian"
    ],
    [
      "Doorn",
      "Doorn#Low_German"
    ],
    [
      "doorn",
      "doorn#Dutch"
    ],
    [
      "Dorn",
      "Dorn#German"
    ],
    [
      "torn",
      "torn#Norwegian_Bokmål"
    ],
    [
      "torn",
      "torn#Swedish"
    ],
    [
      "törne",
      "törne#Swedish"
    ],
    [
      "𐌸𐌰𐌿𐍂𐌽𐌿𐍃",
      "𐌸𐌰𐌿𐍂𐌽𐌿𐍃#Gothic"
    ],
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      "трънъ",
      "трънъ#Old_Church_Slavonic"
    ],
    [
      "тёрн",
      "тёрн#Russian"
    ],
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      "cierń",
      "cierń#Polish"
    ],
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      "taňi",
      "taňi#Kamkata-viri"
    ],
    [
      "tai",
      "tai#Kamkata-viri"
    ],
    [
      "तृण",
      "तृण#Sanskrit"
    ]
  ],
  "references": [],
  "descendants": [],
  "lexical": [
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      "pos": "verb",
      "glosses": [
        "To pierce with, or as if with, a thorn (sharp pointed object)."
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      "pos": "noun",
      "glosses": [
        "A modified branch that is hard and sharp like a spike.",
        "Any thorn-like structure on plants, such as the spine and the prickle.",
        "Any shrub or small tree that bears thorns, especially a hawthorn.",
        "That which pricks or annoys; anything troublesome."
      ],
      "tags": [
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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 thorn →

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-dGhvcm4