An old cuff; an old man. To cuff Jonas; said of one who is knock-kneed, or who beats his sides to keep himself warm in frosty weather; called also Beating the booby.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Cucumbers * CuffinNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes