What is the meaning of Wet_dream?

An erotic dream (imaginary vision while sleeping) bringing the sleeper to orgasm.

The orgasm in such a dream. (Can we add an example for this sense?)

An exciting fantasy; a very appealing, ideal thing, person, or state of affairs.

To produce fluids from the sex organs as a result of sexual arousal during sleep; to have an erotic dream; to fantasize (about something, especially in a sexual way).

To have an erotic dream about (someone or something); to fantasize about (someone or something) sexually.

Source: wiktionary.org