skinny

Concise Oxford English Dictionary © 2008 Oxford University Press:
skinny/ˈskɪni/

▶adjective (skinnier, skinniest)

• 1 (of a person) unattractively thin.

• 2 (of an article of clothing) tight-fitting.

• 3 informal (of coffee) made with skimmed or semi-skimmed milk.

▶noun informal

• 1 (pl. skinnies) a skinny person.

• 2 (the skinny) N. Amer. confidential information or gossip.

– derivatives
skinniness noun.