绿豆

綠豆
lǜdòu
mung bean

CEDICT

Entry Composition

1 绿 lǜ
  1. green
  2. (slang) (derived from 绿帽子 lǜmàozi) to cheat on (one's spouse or boyfriend or girlfriend)
=2 豆 dòu
=2 豆 dòu (old) stemmed cup or bowl

classifiers: 顆, 粒