To spend. Will you melt a borde? will you spend a shilling? The cull melted a couple of decusses upon us; the gentleman spent a couple of crowns upon us. CANT.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Melting Moments * Member MugNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes