trefoil

== English == === Etymology === From Middle English trefoil, from Old French trifoil, trefeul, from Latin trifolium, from tri- (“three”) + folium (“leaf”). === Pronunciation === IPA(key): /ˈtɹɛ.fɔɪl/, /ˈtɹiː.fɔɪl/ === Noun === trefoil (plural trefoils) Any of several plants of the pea family, having compound, trifoliate leaves; especially one of the genus Trifolium. A symbol having the shape of such leaves, especially when used as an architectural ornament. Synonym: threefoil (topology) Ellipsis of trefoil knot. ==== Coordinate terms ==== ==== Derived terms ==== ==== Related terms ==== ==== Translations ==== === Anagrams === loftier