WordNet (r) 3.0 (2006):

sharpy
    n 1: an alert and energetic person [syn: eager beaver, busy
         bee, live wire, sharpie, sharpy]
    2: a professional card player who makes a living by cheating at
       card games [syn: cardsharp, card sharp, cardsharper,
       card sharper, sharper, sharpie, sharpy, card shark]