Py·ja·ma n.  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.]
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 pyjama
      n : a pair of loose trousers tied by a drawstring around the
          waist; worn by men and women in some Asian countries