Standard Lemma guide

trefoil

noun · 6 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

Each Play button uses your device's default local English voice, or a natural local fallback. The selected voice name appears after playback. This is synthesized speech, not a source recording.

  • /ˈtɹɛ.fɔɪl/
  • /ˈtɹiː.fɔɪl/
  • Southern-England: Recorded audio is listed in the source snapshot.

1

noun

Meaning 1

Any of several plants of the pea family, having compound, trifoliate leaves; especially one of the genus Trifolium.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

2

noun

Meaning 2

A symbol having the shape of such leaves, especially when used as an architectural ornament.

Definition source: English Wiktionary via Wiktextract

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: threefoil

Antonyms: none provided

3

noun

Meaning 3

Ellipsis of trefoil knot.

Definition source: English Wiktionary via Wiktextract

Usage: abbreviation, alt-of, ellipsis

Topics: mathematics, sciences, topology

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

4

noun

Meaning 4

an architectural ornament in the form of three arcs arranged in a circle

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

Broader terms: architectural ornament

5

noun

Meaning 5

a plant of the genus Trifolium

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: clover

Antonyms: none provided

Broader terms: herb, herbaceous plant

Narrower terms: alpine clover, Trifolium alpinum, hop clover, shamrock, lesser yellow trefoil, Trifolium dubium, crimson clover, Italian clover, Trifolium incarnatum, red clover, purple clover, Trifolium pratense, buffalo clover, Trifolium reflexum, Trifolium stoloniferum, white clover, dutch clover, Trifolium repens

6

noun

Meaning 6

any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves

Definition source: Princeton WordNet 3.0

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: medic, medick

Antonyms: none provided

Broader terms: herb, herbaceous plant

Narrower terms: moon trefoil, Medicago arborea, sickle alfalfa, sickle lucerne, sickle medick, Medicago falcata, Calvary clover, Medicago intertexta, Medicago echinus, black medick, hop clover, yellow trefoil, nonesuch clover, Medicago lupulina, alfalfa, lucerne, Medicago sativa

History

Etymology

From Middle English trefoil, from Old French trifoil, trefeul, from Latin trifolium, from tri- (“three”) + folium (“leaf”).

Across languages

Translations

54 source translations are retained for this English entry.

  • Amharic: ኣማቅጥ (ʾamaḳṭ) — plant
  • Arabic: نَفَل (nafal) — plant
  • Armenian: երեքնուկ (erekʻnuk) — plant
  • Bulgarian: трилистник (trilistnik) — plant
  • Catalan: trèvol — plant
  • Chinese Cantonese: 三葉草 /三叶草 (saam1 jip6 cou2) — plant
  • Chinese Mandarin: 三葉草 /三叶草 (sānyècǎo) — plant
  • Czech: trojlístek — plant
  • Danish: trekløver — plant
  • Dutch: klaver — plant
  • Esperanto: trifolio — plant
  • Finnish: kolmiapila — plant
  • French: trèfle — plant
  • Georgian: სამყურა (samq̇ura) — plant
  • German: Klee — plant
  • German: Dreiblatt — plant
  • Greek: τριφύλλι (trifýlli) — plant
  • Greek: τριφύλλιον (trifýllion) — plant
  • Ido: trifolio — plant
  • Italian: trifoglio — plant
  • Japanese: クローバー (kurōbā) — plant
  • Latin: trifolium — plant
  • Norman: trêfl'ye dg'ieau — plant
  • Persian: شبدر (šabdar) — plant
  • Polish: koniczyna — plant
  • Portuguese: trifólio — plant
  • Portuguese: trevo — plant
  • Romanian: trifoi — plant
  • Russian: трили́стник (trilístnik) — plant
  • Russian: кле́вер (kléver) — plant
  • Scottish Gaelic: seamrag — plant
  • Scottish Gaelic: barra-mhìslein — plant
  • Spanish: trébol — plant
  • Tagalog: klober — plant
  • Turkish: yonca — plant
  • Turkish: tirfil — plant
  • Turkish: üçgül — plant
  • Ottoman Turkish: یونجه (yonca) — plant
  • Ottoman Turkish: طرفیل (tırfıl) — plant
  • Ukrainian: трили́сник (trylýsnyk) — plant
  • Vietnamese: cây chia ba — plant
  • Bulgarian: трили́стник (trilístnik) — symbol
  • Czech: trojlist — symbol
  • Finnish: apilanlehti — symbol
  • Finnish: kolmiapila — symbol
  • Finnish: kolmilehti — symbol
  • French: tiercefeuille — symbol
  • French: tierce-feuille — symbol
  • Old French: tierche feuille — symbol
  • German: Dreipass — symbol
  • Latin: trifolium — symbol
  • Polish: trójliść — symbol
  • Russian: трили́стник (trilístnik) — symbol
  • Spanish: trébol — symbol
Real reading context

trefoil in complete knowledge articles