Someone who plays (or knows how to play) card games(noun)
WordNet. Princeton University. 2010.
Use "card player" in a sentence
"They were on the best of terms with government officials and citizens at Fort Bowie, Apache Pass, San Simon, San Carlos, and all the settlements in that vicinity, and spent a good deal of their time at Tucson, where Billy's skill as a monte dealer and card player generally kept the two boys in luxuriant style and gave them enviable prestige among the sporting fraternity, which was then a powerful and influential element in Arizona."