Meaning

noun a dance party that lasts all night and electronically synthesized music is played

noun an extravagantly enthusiastic review

verb participate in an all-night techno dance party

originFrom northern Middle English raven, from Old Norse ráfa (“to wander, roam”), of uncertain and obscure origin. Perhaps from a dissimilation of Proto-Germanic *wab(b)ōną (“to sway, waver, swing, shake, wobble, totter, reel, careen”), from Proto-Indo-European *webʰ- (“to move, swarm, waft”). Cognate with Norwegian Nynorsk rava (“to wander, be delirious”). Doublet of rove. Compare also Middle Dutch…

Etymology from Wiktionary, CC BY-SA 3.0