Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun trefoil

3 senses of trefoil

Sense 1
medic, medick, trefoil -- (any of several Old World herbs of the genus Medicago having small flowers and trifoliate compound leaves)
       => herb, herbaceous plant -- (a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests)

Sense 2
clover, trefoil -- (a plant of the genus Trifolium)
       => herb, herbaceous plant -- (a plant lacking a permanent woody stem; many are flowering garden plants or potherbs; some having medicinal properties; some are pests)

Sense 3
trefoil -- (an architectural ornament in the form of three arcs arranged in a circle)
       => architectural ornament -- ((architecture) something added to a building to improve its appearance)