1. (noun)pajama, pyjama a pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries Synonyms: pj's, pajama, jammies, pyjama
2. (noun)pajama, pyjama, pj's, jammies (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers Synonyms: pj's, pajama, jammies, pyjama