[clasp.er] n (ca. 1847): a male copulatory structure: a: one of a pair of external anal processes of an insect that are used to grasp a female b: one of a pair of organs that are extensions of the pelvic fins of cartilaginous fishes
CLASPER
Meaning of CLASPER in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012