waistcoat

Meanings

1. 1
   noun

   A sleeveless, collarless garment worn over a shirt and under a suit jacket.

   Sunning himself on the board steps, I saw for the first time Mr. Farquhar Fenelon Cooke.[…]A silver snaffle on a heavy leather watch guard which connected the pockets of his corduroy waistcoat, together with a huge gold stirrup in his Ascot tie, sufficiently proclaimed his tastes.

2. 2
   noun

   a man's sleeveless garment worn underneath a coat

3. 3
   noun

   An ornamental garment worn under a doublet.

Etymology

From waist + coat. Compare Yola wauscoat, wazcoote.