nappy

Concise Oxford English Dictionary © 2008 Oxford University Press:
nappy1

▶noun (pl. nappies) Brit. a piece of absorbent material wrapped round a baby's bottom and between its legs to absorb and retain urine and faeces.

– origin early 20th cent.: abbrev. of napkin.

Concise Oxford English Dictionary © 2008 Oxford University Press:
nappy2

▶adjective (nappier, nappiest) US informal (of a black person's hair) frizzy.

– origin C15 (in the sense ‘shaggy’): from MDu. noppigh, Mid. Low Ger. noppich, from noppe (see nap2).