Tre"foil(?), n. [L. tres three + E. foil leaf; cf. F. frfle, It. trifoglio, L. trifolium. See Tri-, Foil leaf, and cf. Trifoly.] 1. (Bot.) 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.
(Arch.) An ornamental foliation consisting of three divisions, or foils.
(Her.) A charge representing the clover leaf.
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Thu 13th December 2018