caudal (Adjective) — Constituting or relating to a tail. ex. "caudal appendage"
caudal (Adjective) — Resembling a tail.
caudal (Adjective) — Situated in or directed toward the part of the body from which the tail arises. ex. "caudal fins" ex. "the caudal end of the body"
caudal (Adverb) — Toward the posterior end of the body.