claspers is a form of:

Clasper



ENGLISH MEANING
noun
1.
One who, or that which, clasps, as a tendril.
2.
One of a pair of organs used by the male for grasping the female among many of the Crustacea.
3.
One of a pair of male copulatory organs, developed on the anterior side of the ventral fins of sharks and other elasmobranchs.