Definition of tatsoi
: an Asian mustard (Brassica rapa rosularis) having a rosette of edible dark green spoon-shaped glossy leaves; also : the leaves
Origin and Etymology of tatsoi
Chinese (Guangdong) daat-choi, from daat- sink, fall flat + choi vegetable (or from a cognate compound in another Chinese dialect)
First Known Use: 1987
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