pak choi
Concise Oxford English Dictionary © 2008 Oxford University Press:
pak choi /pak ˈtʃɔɪ/ (also N. Amer. bok choy)
▶noun a Chinese cabbage of a variety with smooth-edged tapering leaves.
– origin from Chin. (Cantonese dial.) paâk ts'oì ‘white vegetable’.
'pak choi' also found in these Oxford entries:

