Secured, fixed. He offered me a decus, and I nailed him; he offered me a crown, and I struck or fixed him.
Definition taken from The 1811 Dictionary of the Vulgar Tongue, originally by Francis Grose.
Nacky * Nanny HouseNathan Bailey's 1736 Dictionary of canting and thieving slang
John S. Farmer's collection of canting songs and slang rhymes