bathing trunks

Noun

 * 1) A pair of shorts or briefs worn for swimming or bathing.
 * His bathing trunks were ruined and he didn't have another pair.

Usage notes

 * To make the quantity of clothing absolutely clear, one can say "a pair of bathing trunks" or "(however many) pairs of bathing trunks".

Synonyms

 * swimming trunks
 * trunks