WARREN,
he that is Security for Goods taken up on Credit, by extravagant young Gentlemen; also a Boarding-school, or a Bawdy-house, which are too much the same Thing.
he that is Security for Goods taken up on Credit, by extravagant young Gentlemen; also a Boarding-school, or a Bawdy-house, which are too much the same Thing.
Entry taken from 1736 Canting Dictionary, by Nathan Bailey.
Warren in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).