bootie Syllabification: (boot·ie)Pronunciation: /ˈbo͞otē/ (also bootee)Definition of bootie noun (plural booties) 1a soft shoe, typically knitted, worn by a baby. any soft, socklike shoe. 2a protective shoe or lining for a shoe. 3a woman’s short boot. Origin: late 18th century: from boot1 + -iebootie in other Oxford dictionaries Definition of bootie in the British & World English dictionary