Definitions for "TAILCOAT"
Keywords:  jacket, dress, formalwear, formal, worn
Worn only for full dress or white tie, this very formal jacket is cut just below the waist in front, with "tails" at the back that are about knee-length. Standard features include non-functional buttons on both sides (a tailcoat is never closed in front) and a hem that descends into points at the front opening.
formalwear consisting of full evening dress for men
A man’s full dress coat with two long tapering skirts at the back. Appropriate for formal or very formal events.