waistcoat

A waistcoat is a garment worn under a doublet, or more commonly in British English, it is referred to as a vest. The term "waistcoated" describes someone who is wearing a waistcoat.12

During the Regency period in Great Britain (1811-1820), men's fashion evolved to emphasize fit and simplicity. The traditional three-piece ensemble included a waistcoat, pants, and a coat, but these were typically made from unadorned fabrics in muted colors, unlike the more ornate styles of the 18th century. Waistcoats were the exception, sometimes featuring subdued embellishments and available in various colors and materials.3