Meaning

noun a series of mental images and emotions occurring during sleep

verb have a daydream; indulge in a fantasy

verb experience while sleeping

originFrom Middle English drem, from Old English drēam (“music, joy”), from Proto-West Germanic *draum, from Proto-Germanic *draumaz, from earlier *draugmaz, from Proto-Indo-European *dʰrowgʰ-mos, from *dʰrewgʰ- (“to deceive, injure, damage”). The sense of "dream", though not…

Etymology from Wiktionary, CC BY-SA 3.0