cheongsam Syllabification: (cheong·sam)Pronunciation: /ˈCHôNGˌsäm/Definition of cheongsam noun a straight, close-fitting silk dress with a high neck, short sleeves, and a slit skirt, worn traditionally by Chinese and Indonesian women. Origin:Chinese (Cantonese dialect)cheongsam in other Oxford dictionaries Definition of cheongsam in the British & World English dictionary