choi sum Syllabification: (choi sum)Pronunciation: /CHoi ˈsəm/ (also choy sum)Definition of choi sum noun a small Chinese cabbage of a variety with mild-tasting leaves and small edible yellow flowers. Brassica rapa variety parachinensis, family Cruciferae Origin:Chinese (Cantonese dialect), literally 'vegetable heart'choi sum in other Oxford dictionaries Definition of choi sum in the British & World English dictionary
