caudal fin

/ˌkɔdl fɪn/

Other forms: caudal fins

Definitions of caudal fin

1. noun

   the tail of fishes and some other aquatic vertebrates
   synonyms: tail fin

   types:

   heterocercal fin

   a tail fin with unequal lobes in which the vertebral column turns upward into the larger lobe as in sharks

   homocercal fin

   symmetrical tail fin extending beyond the end of the vertebral column as in most bony fishes

   type of:

   fin

   organ of locomotion and balance in fishes and some other aquatic animals