绿帽

綠帽
lǜmào
see 绿帽子 lu:màozi

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 帽 mào old variant of 帽 mào
=2 帽 mào
  1. hat
  2. cap