1. An individual that is very good at games that involve playing cards of some sort
2. An individual that sews until the wee hours of the morning, often losing sleep over correct stitching methods or zipper attachment. Beware when this type of individual does sleep, however, for there is often a strong, pungeunt draft that occompanies slumber.
1. That guy playing Texas Hold-em is a total cardshark.
2. Dude, CardShark over there totally just cut one as he slept!