Word.ws English Dictionary

trefoil

/ˈtɹɛ.fɔɪl/

trefoil noun: any of several plants of the pea family, having compound, trifoliate leaves; especially one of the genus Trifolium. Also the ellipsis of trefoil knot.

trefoil: any of several plants of the pea family, having compound, trifoliate leaves; especially one of the...
Image: Ivar Leidus, CC BY-SA 4.0, via Wikimedia Commons

Noun

trefoil (plural trefoils)

  1. Any of several plants of the pea family, having compound, trifoliate leaves; especially one of the genus Trifolium.
  2. A symbol having the shape of such leaves, especially when used as an architectural ornament.
    • "The pristine, unbroken condition of the vessel – sometimes called a trefoil jug – caused the entire dig to 'come to a halt,' Søvsø remarked."2015 June 16, David DeMar, “Ancient Pitcher Discovered in Historic Danish City”, in New Historian
    Synonyms:
    threefoil

Also used as

trefoil is also the ellipsis of trefoil knot.

trefoil meaning in Tagalog, Arabic, Persian and Vietnamese

trefoil in Tagalog

plant
klober

trefoil in Arabic

plant
نَفَل nafal

trefoil in Persian

plant
شبدر šabdar

trefoil in Vietnamese

plant
cây chia ba

Synonyms of trefoil

Forms of trefoil

pluraltrefoils

Origin of trefoil

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

Words formed from trefoil

Phrases with trefoil

Questions about trefoil

What does trefoil mean?
Trefoil means any of several plants of the pea family, having compound, trifoliate leaves; especially one of the genus Trifolium.
What is trefoil in Tagalog?
Trefoil in Tagalog is klober. See Trefoil meaning in Tagalog.
What part of speech is trefoil?
Trefoil is a noun.
How do you pronounce trefoil?
Trefoil is pronounced /ˈtɹɛ.fɔɪl/.
What is the plural of trefoil?
The plural of trefoil is trefoils.

Words near trefoil in the dictionary

  1. trefled
  2. trefly
  3. Treflys
  4. treflée
  5. Trefnant
  6. trefoil
  7. trefoil knot
  8. trefoil knots
  9. trefoiled
  10. trefoillike
  11. trefoils

Source and license

Adapted from Wiktionary: trefoil (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Vealhurl-trefoil.wav.

Cite this entry: “trefoil.” Word.ws, https://word.ws/trefoil. Based on Wiktionary, CC BY-SA 4.0.