Dinner jacket

Constant was fully dressed in blue-green evening shorts and a dinner jacket of gold brocade.

He was dressed in a gray dinner jacket and matching trousers.

[They] sat in a pen in the corner, smoking cigarettes and reading magazines; four or five girls in black silk dresses and the same number of slight effeminate young men in dinner-jackets.

Mr Lackersteen was even wearing a dinner-jacket—white, because of the season—and was completely sober. The boiled shirt and piqué waistcoat seemed to hold him upright and stiffen his moral fibre like a breastplate.

It was a dinner-jacket evening—not tails, because they would only be three—and though he had respected such niceties for years he found them suddenly ridiculous.