"before the lamplit bagnios they passed."
Caricature of prostitutes at The Turk's Head, a well-known English brothel or bagnio (1787)
Public DomainCaricature of prostitutes at The Turk's Head, a well-known English brothel or bagnio (1787) - Credit: Library of Congress

A bagnio was a bath or bath-house which generally doubled as a brothel.

The term bagnio originally referred simply to bath-houses, and in England was used to describe coffee houses which offered Turkish baths. By 1740 it signified a place where rooms could be hired with no questions asked, and later a house of prostitution.