To VAMP,
to parn anything. [[pawn?]] I'll Vamp, and tip you the Cole; I'll pawn my Cloaths, but I'll raise the Money for you. To Vamp; To new dress, liquer, refresh or rub up old Hats, Boots, Shoes &c. Also a Sock.
To Vamp in the 1811 Vulgar Tongue
Also see examples in Canting Songs and Slang Rhymes collected by John S. Farmer (1896).