1. A man's full-dress jacket with two long tapering tails at the back
   "The groom wore a traditional swallowtail for the wedding";
   - swallow-tailed coat, morning coat

Derived forms: swallowtails

Type of: jacket

Part of: dress suit, full dress, morning dress, tail coat, tailcoat, tails, white tie, white tie and tails

Encyclopedia: Swallowtail