py ‧ ja ‧ mas BrE AmE British English , pajamas American English /pəˈdʒɑːməz $ -ˈdʒæ-, -ˈdʒɑː-/ noun [plural]
1 . a soft pair of trousers and a top that you wear in bed:
striped pyjamas
2 . loose trousers that are tied around the waist, worn by Muslim men or women
—pyjama adjective [only before noun] :
pyjama bottoms
⇨ the cat’s pyjamas at ↑ cat (5)