[ 'trɛfɔɪl , 'tri:fɔɪl ]
■ noun
1》 a small plant with yellow flowers and three-lobed clover-like leaves. [Genera Trifolium and Lotus : several species.]
2》 architectural tracery in the form of three rounded lobes like a clover leaf.
3》 a thing having three parts.
Derivatives
~ed adjective
Origin
ME: from Anglo-Norman Fr. trifoil , from L. trifolium , from tri- 'three' + folium 'leaf'.