1. pajama(n = noun.artifact) pyjama - a pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries;
is a kind of pant, trouser
2. pajama(n = noun.artifact) jammies, pj's, pyjama - (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers;
is a kind of nightclothes, nightwear, sleepwear
has particulars: sleeper