[1] : The Collaborative International Dictionary of English v.0.48

caudal \cau"dal\, 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., the terminal fin or "tail" of a fish.
      1913 webster
see also:
coward caudal fin 

[2] : WordNet (r) 2.0

caudal fin
     n : the tail of fishes and some other aquatic vertebrates syn:
         tail fin
see also:
tail fin 

Caudal >> C Words
Caudal, definition of term: Caudal
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