/bok" choy"/
1. an Asian plant, Brassica rapa chinensis, of the mustard family, having a loose cluster of edible, dark-green leaves on white stalks.
2. the leaves and stalks of this plant cooked as a vegetable or eaten raw in salads.
Also, bok-choy, pak-choi, pakchoi .
[ baahk-chòi, akin to Chin báicài lit., white vegetable ]