Meaning

noun something that bulges out or is protuberant or projects from its surroundings

verb round one's back by bending forward and drawing the shoulders forward

verb have sexual intercourse with

originProbably borrowed from Dutch homp (“hump, lump”) or Middle Low German hump (“heap, hill, stump”), from Old Saxon *hump (“hill, heap, thick piece”), from Proto-Germanic *humpaz (“hip, height”), from Proto-Indo-European *kumb- (“curved”). Compare Proto-Germanic *huppōną (“to hop”), from Proto-Indo-European *kewb-, *ḱewb- (unnasalised root), and English hub (a softened variant without nasal?).…

Etymology from Wiktionary, CC BY-SA 3.0