A marked playing card, used to enable a player to cheat or to facilitate conjuring tricks. Also figurative. See marked, adj. 1b.

In early use: †a marked playing card used by a gambler (obsolete). Later: (in card tricks) a card whose location in the pack enables the person…

A card prepared for cheating by being cut slightly concave on two edges: cf. quot. 1873.

plural. Gaming. ‘High cards cut wedge-shape, a little wider than the rest, so as to be easily drawn in a crooked game’ (Farmer & Henley).

A card prepared for cheating by being cut slightly convex along two edges.

slang (Gambling and Conjuring). A marked card.

a pack of cards that has cheatingly been set in a prearranged order; also figurative. Hence more widely (and without the implication of…