flowering edible rape (Brassica chinensis var. oleifera)
Definitions (CC-CANTO)
cooked vegetables with a dash of oil or oyster sauce (as a dish)
Definitions (粵典–words.hk)
名詞
餸菜嘅一種,將菜心、生菜、芥蘭之類時令蔬菜烚熟,配上熟油、蠔油食用。有啲餐廳未必落蠔油,可能會係豉油、腩汁或者腐乳。 (量詞:碟/條) boiled vegetables, usually served with oil and oyster sauce. It may often serve with soy sauce or sauce of stewed beef brisket or soy cheese if oyster sauce is not used.
Definitions (Wiktionary)
noun, Hong-Kong
boiled greens (e.g. choy sum, kailan, lettuce), often served with oyster sauce)
noun, Cantonese, Hong-Kong, slang
car crash
noun, China, Northern
bok choy
noun, China, Southern
rape; rapeseed (plant used for vegetable oil) (syn.) 菜