Caudal \Cau"dal\, a. [L. Cauda tail. Cf. {Coward}.] Of the nature of, or pertaining to, a tail; having a tail-like appendage. The male widow-bird, remarkable for his caudal plumes. --Darwin. {Caudal fin} (Zo["o]l.), the terminal fin (or ``tail'') of a fish.
caudal fin n : the tail of fishes and some other aquatic vertebrates [syn: {tail fin}]