绿豆凸 lǜdòutū mung bean cake Origin Definitions Defs Strokes Stroke Words Sentences Sents 绿豆 綠豆 lǜdòu noun mung bean mung bean; a green legume used in cooking, flour production, or alcohol fermentation凸 tū verb protruding to stick out or protrude; convex; describes a male connector. This is the opposite of 凹 āo.