vertical fin(n = noun.artifact) tail fin, tailfin, 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

caudal fin, dorsal fin, fin, fin de si'8acle, fin de siecle, fin keel, fin whale, heterocercal fin, homocercal fin, pectoral fin, pelvic fin, tail fin, ventral fin, vertical, vertical angle, vertical bank, vertical circle, vertical combination, vertical file, vertical flute, vertical integration, vertical section, vertical stabiliser, vertical stabilizer, vertical surface, vertical tail, vertical union