frenula

支撑或限制附着部位运动的小组织褶或嵴,尤指舌下或唇与牙龈之间的皮肤褶。

A small fold or ridge of tissue that supports or restrains the motion of the part to which it is attached, in particular a fold of skin beneath the tongue, or between the lip and the gum.

某些鳞翅目昆虫后翅边缘的一根或一排鬃毛,与前翅后部的钩状结构互锁以连接两翅。

A bristle or row of bristles on the edge of the hindwings of some lepidoptera which unites the wings by interlocking with a catch on the posterior part of the forewings.