蕹 Traditional form: 蕹 Pinyin (reading): wèng Definitions: water spinach or ong choy (Ipomoea aquatica), used as a vegetable in south China and southeast Asia Taiwan pr. (yōng) Characters: 蕹 - an edible water plant; Ipomoea aquatica Traditional characters: 蕹 - an edible water plant; Ipomoea aquatica