1. (in insects, fishes, crustaceans, etc.) one of the modified, usually paired organs or parts by which the male clasps the female during copulation
   "The male dragonfly uses its claspers to hold the female during mating"
    
2. A posterior extension on each of the pelvic fins of male elasmobranch fishes that aids in the transmission of sperm during copulation
   "Shark claspers are easily visible in mature males"
    
3. One who, or that which, clasps, as a tendril
   "The vine's claspers helped it cling to the trellis"

Derived forms: claspers

Encyclopedia: Clasper, Mike