trifid
/ˈtraɪfɪd/adjective
1
- chiefly Biology partly or wholly split into three divisions or lobes【主生】三（分）裂的。
2
- （亦作trefid）(of an antique spoon) with three notches splitting the end of the handle（古式汤匙）匙柄三凹口的。
词源
mid 18th cent.: from Latin trifidus, from tri- 'three' + fid- 'split, divided' （from the verb findere）.