/ ˈnæpi; NAmE / noun
( pl. -ies ) ( BrE ) ( NAmE di·aper ) a piece of soft cloth or paper that is folded around a baby's bottom and between its legs to absorb and hold its body waste :
I'll change her nappy.
a disposable nappy (= one that is made to be used once only)
nappy rash
••
WORD ORIGIN
early 20th cent.: abbreviation of napkin .