Pyjama vs. Pyjamas — What's the Difference?

Variant of pajama.

A loose-fitting jacket and trousers for sleeping in

(British) pyjamas

Variant of pajama.

In India and Persia, thin loose trowsers or drawers; in Europe and America, drawers worn at night, or a kind of nightdress with legs. Usually used in the plural. See pajamas.

Standard spelling of pajamas.

A pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries

Standard spelling of pajamas.

A garment, similar to the Oriental pyjama (which see), adopted among Europeans, Americans, and other Occidentals, for wear in the dressing room and during sleep; also, a suit of drawers and blouse for such wear.

Lightweight trousers worn in various Eastern countries

Loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers