tail fin also tail·fin (tālfĭn′)
1. A fin at the posterior part of the body of a fish, crustacean, whale, or other aquatic animal.
2. An ornamental projection shaped like a fin on the rear fender of an automobile. Also called fin1.
3. A fin at the tail end of an aerodynamic or hydrodynamic object such as an airplane or surfboard, used to provide directional control or stability.
(click for a larger image)tail fin
1959 Cadillac Fleetwood Sixty Special
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