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Noun: clasper  klãs-pu(r)
  1. (in insects, fishes, crustaceans, etc.) one of the modified, usually paired organs or parts by which the male clasps the female during copulation
  2. A posterior extension on each of the pelvic fins of male elasmobranch fishes that aids in the transmission of sperm during copulation
  3. One who, or that which, clasps, as a tendril

Derived forms: claspers

Encyclopedia: Clasper