The label is not always intended as pejorative, and is sometimes used to refer to practitioners of card tricks for entertainment purposes. 'Sharp' and 'shark' spellings have varied over time and by region. 1594) by Caravaggio Le Tricheur à l'as de carreau (1635) by Georges de La TourĪ card sharp (also card shark, sometimes hyphenated or spelled as a single word) is a person who uses skill and/or deception to win at poker or other card games. For other uses, see Card Shark (disambiguation).