tail fin meaning and definition

TAIL FIN noun

Definition of tail fin (noun)

1. a stabilizer that is part of the vertical tail structure of an airplane
   • synonyms: tailfin, vertical fin, vertical stabiliser, vertical stabilizer
2. one of a pair of decorations projecting above the rear fenders of an automobile
   • synonyms: fin, tailfin
3. the tail of fishes and some other aquatic vertebrates
   • synonyms: caudal fin