Entry 1 sense Webster, 1913 Bordello /bôr-dĕl'-ōˌ/ · Bor·del·lo · IPA /bɔː(ɹ)ˈdɛləʊ/ 01 n. a building where prostitutes are available for hire; a brothel. 1. a building where prostitutes are available for hire; a brothel. Syn. whorehouse, whore house, brothel, bagnio, house of prostitution, house of ill repute, bawdyhouse, bawdy house, cathouse, sporting house.