dress coat
Word family
Synonym discussion
Sense: noun/1
A dress coat (or tailcoat) is the most formal men's evening jacket, with a short front and long back panels — it belongs to the white-tie dress code, the strictest level of evening formality. A tuxedo (British English: dinner jacket) is less formal: it is a solid-black jacket with satin lapels, worn with a bow tie at black-tie events. A morning coat is a daytime formal jacket, grey or black, with a cutaway front, worn at weddings and horse-racing events. In short: dress coat = evening, most formal (white-tie); tuxedo/dinner jacket = evening, semi-formal (black-tie); morning coat = daytime formal.
Common collocations
Etymology
The compound 'dress coat' combines 'dress' (meaning formal attire, from Old French 'drecier' — to arrange or set straight) with 'coat' (from Old French 'cote', a tunic). In the early 1800s, as men's fashion shifted away from ornate court coats toward simpler clothing, the tailcoat emerged as the required coat for formal evening occasions and was called a 'dress coat' to contrast it with the ordinary day coat.