1. (

• eager_beaver ,
• busy_bee ,
• live_wire ,
• sharpie ,
• sharpy ,

) an alert and energetic person ;

2. (

• cardsharp ,
• card_sharp ,
• cardsharper ,
• card_sharper ,
• sharper ,
• sharpie ,
• sharpy ,
• card_shark

) a professional card player who makes a living by cheating at card games ;