Meaning

noun a building where prostitutes are available

originFrom Middle English brothel, brodel, brodelle, brethel (“a wretch, a depraved man or woman”) (compare also Middle English bretheling (“a wretch”)), apparently from an unrecorded Old English *brēoþel (“degenerative, corruptive”), related to Old English ābrēoþan (“to unsettle, degrade, ruin, frustrate, degenerate, deteriorate, fall away”); Old English ābroþen (“degenerate, base, trifling”); both…

Etymology from Wiktionary, CC BY-SA 3.0