card mechanic

plural card mechanics

1. A cardsharp.

   Now John Lee Walker was a card mechanic / Had a hand for trouble and a eye for cash

   1971, Charlie Daniels, “Trudy”, in Charlie Daniels

   2 more examples

   Card mechanics practice bottom dealing in front of a mirror until it becomes so natural they can't see themselves cheat.

   2007, Gordon Donnell, The Only Game in Town

   The rights to Titanic's story is ^([sic]) owned by the gambler's son—a card mechanic of some repute himself—and these rights have been sold recently to a dentist in Dallas who teamed up with an advertising executive from Fort Worth […]

   2010, William Harrison, The Mutations of Rollerball: Essays, page 48