What is the word cuckold mean in play Othello?

In the play Othello, the word "cuckold" is used as an insult to refer to a man whose wife has been unfaithful to him. The term implies that the man is weak or foolish for allowing his wife to deceive him. In the context of the play, Iago uses the term to manipulate Othello into believing that his wife, Desdemona, is having an affair with Cassio. Othello's jealousy and insecurity over the perceived betrayal lead to tragic consequences for both himself and Desdemona.