To indulge in fantasy; to imagine things only possible in fantasy.
To portray in the mind, using fantasy.
To have an erotic dream about (someone or something); (figuratively) to fantasize about (someone or something) sexually.
To produce fluids from the sex organs as a result of sexual arousal during sleep; to have an erotic dream; (figuratively) to fantasize (about something, especially in a sexual way).
An erotic dream bringing the sleeper to orgasm.
An exciting fantasy; a very appealing, ideal thing, person, or state of affairs.
The orgasm in such a dream.