What does "waistcoat" mean?

An ornamental garment worn under a doublet.

What is a synonym for "waistcoat"?

Common synonyms include: vest, gilet, jerkin, jerkins, vests.

Pronounced //ˈweɪs(t)kəʊt//.

/ˈweɪs(t)kəʊt/ noun

noun ·Rare ·Advanced level

Noun

1
An ornamental garment worn under a doublet.
2
a man's sleeveless garment worn underneath a coat wordnet
3
A sleeveless, collarless garment worn over a shirt and under a suit jacket. British
"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."

"This waistcoat won't meet at the front."

From waist + coat. Compare Yola wauscoat, wazcoote.