(figuratively) a symbol of a man whose wife is unfaithful; often used in the phrase [[戴绿帽子|戴綠帽子|dai4 lu:4 mao4 zi5]] meaning "to be a cuckold"

To be a cuckold; used to mock a man whose wife has been unfaithful

to have an unfaithful wife or partner

To be cheated on by one's wife or partner; traditionally applied only to men but now used more generally