swindling by cheating at cards, card-sharping; cf. coney-catching, n.

slang. An imposition, a deception; what is now called a ‘sell’; passing from the notion of playful imposition or hoax, to that of swindle or fraud…

Cheating, card-sharping. (See Greek, n. 4.)

the action of making money by cheating at cards; the fact of being a card sharp.