tre·foil
noun/ˈtrefɔɪl/, /ˈtriːfɔɪl/
/ˈtrefɔɪl/, /ˈtriːfɔɪl/
- (specialist) a plant whose leaves are divided into three similar parts, for example clover
车轴草；百脉根；三叶植物 - a decoration or a design like a trefoil leaf in shape
三叶形装饰（或图案）
Word OriginMiddle English: from Anglo-Norman French trifoil, from Latin trifolium, from tri- ‘three’ + folium ‘leaf’.