绿豆

绿豆	lǜ dòu	mung bean
绿	lǜ	green / (slang) (derived from 绿帽子) to cheat on (one's spouse or boyfriend or girlfriend)
豆	dòu	legume; pulse; bean; pea (variant of 豆)
豆	dòu	legume; pulse; bean; pea (CL:颗,粒) / (old) stemmed cup or bowl