The 'trousers' group
These nouns refer to items of clothing or other things that are worn. Although they refer to a single item, they are sometimes used with pair.
bathing trunks bell-bottoms bifocals blinders blinkers bloomers blue jeans boxer shorts braces breeches briefs chinos cords corduroys culottes dark glasses denims drawers dungarees earmuffs flannels flares glasses goggles handcuffs headphones hipsters jeans jockey shorts jodhpurs knickers leggings Levi's long johns overalls pantaloons panties pants pantyhose plus-fours pyjamas reading glasses shades shorts slacks specs spectacles sunglasses suspenders sweatpants swimming trunks tights trousers trunks underpants Y-fronts
He was wearing black jeans, a grey T shirt, and a sad, sad expression.
He's been given a new pair of reading glasses.
Carmen Ballesteros had bought her husband some swimming trunks.
His trousers were stained and wet.