a. [ Pref. bi- + caudal. ] Having, or terminating in, two tails. [ 1913 Webster ]
a. [ L. Cauda tail. Cf. Coward. ] Of the nature of, or pertaining to, a tail; having a tail-like appendage. [ 1913 Webster ]
The male widow-bird, remarkable for his caudal plumes. Darwin. [ 1913 Webster ]
Caudal fin (Zool.),