Noun has 3 senses

• tail fin(n = noun.artifact) tailfin, vertical fin, vertical stabiliser, vertical stabilizer - a stabilizer that is part of the vertical tail structure of an airplane;



• tail fin(n = noun.artifact) fin, tailfin - one of a pair of decorations projecting above the rear fenders of an automobile;



• tail fin(n = noun.animal) caudal fin - the tail of fishes and some other aquatic vertebrates;