tailfin

Noun tailfin has 2 senses

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

• tailfin(n = noun.artifact) fin, tail fin - one of a pair of decorations projecting above the rear fenders of an automobile;
is a part of auto, automobile, car, machine, motorcar
is a kind of decoration, ornament, ornamentation