Trefoil definition

Trefoil

Topics Trefoil Definition

WordNet

(1) An architectural ornament in the form of three arcs arranged in a circle

(2) A plant of the genus Trifolium

(3) Any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves

WiktionaryText

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.