Green’s Dictionary of Slang

a creditor, part of a confidence team, who encourage rich young men to run up large bills and then dun them.

1608		Dekker Lanthorne and Candle-Light Ch. 4: The Cittizen that sells them is the Ferret. They that are take up are the Rabbit-suckers. He upon whose credit these Rabit-suckers runne, is called the Warren.
c.1698		B.E. Dict. Canting Crew n.p.: Warren, he that is Security for Goods taken up, on Credit, by Extravagant young Gentlemen.
1785, 1788, 1796		Grose Classical Dict. of the Vulgar Tongue.
1811		Lex. Balatronicum.
1823		Egan Grose’s Classical Dict. of the Vulgar Tongue.