"pajama" in the noun sense
1. pajama, pyjama
a pair of loose trousers tied by a drawstring around the waist worn by men and women in some Asian countries
2. pajama, pyjama, pj's, jammies
usually plural) loose-fitting nightclothes worn for sleeping or lounging have a jacket top and trousers
Source: WordNet® (An amazing lexical database of English)
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