Clasper
Clasper (klȧsp"ẽr) , noun
1.
One who, or that which, clasps, as a tendril.
The claspers of vines.
2.
(a) (Zoology) One of a pair of organs used by the male for grasping the female among many of the Crustacea.
(b)
(Zoology) One of a pair of male copulatory organs, developed on the anterior side of the ventral fins of sharks and other elasmobranchs. See Illust. of Chimara.