Definition of skinny adjective from the Oxford Advanced American Dictionary

skinny

adjective
/ˈskɪni/
 
 
skinnier, skinniest1 (informal, usually disapproving) very thin, especially in a way that you find unpleasant or uglyskinny legs2 (of clothes) designed to fit closely to the bodya skinny sweater3 (informal) low in fata skinny latte