trefoil
/ˈtɹɛ.fɔɪl/ noun
Forms trefoils
- noun Any of several plants of the pea family, having compound, trifoliate leaves; especially one of the genus Trifolium.
- noun A symbol having the shape of such leaves, especially when used as an architectural ornament.
Synonyms
Etymology
From Middle English trefoil, from Old French trifoil, trefeul, from Latin trifolium, from tri- (“three”) + folium (“leaf”).
Webster’s 1913
- noun Any plant of the genus Trifolium, which includes the white clover, red clover, etc.; --less properly, applied also to the nonesuch, or black medic. See Clover, and Medic.
- noun An ornamental foliation consisting of three divisions, or foils.
Etymology [L. tres three + E. foil leaf; cf. F. frèfle, It. trifoglio, L. trifolium. See Tri-, Foil leaf, and cf. Trifoly.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “trefoil”, CC BY-SA 4.0. Details