Akademik

swallowtail
noun
a man's full-dress jacket with two long tapering tails at the back
Syn: ↑swallow-tailed coat, ↑morning coat
Hypernyms: ↑jacket
Part Holonyms:
dress suit, ↑full dress, ↑tailcoat, ↑tail coat, ↑tails, ↑white tie, ↑white tie and tails, ↑morning dress

Useful english dictionary. 2012.