1. one of a series of slit openings in the pharynxes of fishes and aquatic amphibians through which water passes; [syn: gill slit, branchial cleft, gill cleft]
WordNet (r) 3.0 (2006):
branchial cleft
n 1: one of a series of slit openings in the pharynxes of fishes
and aquatic amphibians through which water passes [syn:
gill slit, branchial cleft, gill cleft]