Coat

In the early nineteenth century, coats were divided into under coats and overcoats.The term under coat is now archaic but denoted the fact that the word coat could be both the outermost layer for outdoor wear (overcoat) or the coat worn under that (under coat).However, the term coat has begun to denote just the overcoat rather than the under coat.The older usage of the word coat can still be found in the expression to wear a coat and tie, which does not mean that wearer has on an overcoat.Nor do the terms tailcoat, morning coat or house coat denote types of overcoat.