tux
n. B2 Upper Intermediate US //ˈtəks// UK //tˈʌks// tux
n. a formal suit with a black jacket and white trousers, usually worn for a wedding or a very special party. It is a shorter, more casual version of a tuxedo.
n. a formal evening suit consisting of a black jacket and white trousers, typically worn for formal events.
He wore a tux to the wedding.
The groom looked very handsome in his black tux as he walked down the aisle.
While the formal tux is the standard for black-tie events, many modern men opt for a slightly more relaxed version with a silk pocket square and a bow tie.