'pajama' definitions:

Definition of 'pajama'

noun

A pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries [syn: pajama, pyjama]

noun

(usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers [syn: pajama, pyjama, pj's, jammies]

From: GCIDE

Pyjama \Py*ja"ma\, n. [Hind. p[=a]e-j[=a]ma, literally, leg clothing.] 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. [Written also paijama pajama.] [Chiefly British variant of pajama.] [1913 Webster +PJC] Pyjamas