D defs.my
Entry 1 sense Webster, 1913

Caudal

/käd'-əl/ · Cau·dal · IPA /ˈkɔːdəl/
01 a. Of the nature of, or pertaining to, a tail; having a tail-like appendage.
  1. 1.
    Of the nature of, or pertaining to, a tail; having a tail-like appendage.
    “The male widow-bird, remarkable for his caudal plumes.” Darwin.
Phrases & compounds
Caudal fin — the terminal fin (or “tail”) of a fish.