Also found in: Financial, Idioms, Encyclopedia.
1. (Ball Games, other than specified) slang a ball-game player, esp in basketball
2. slang someone, usually a man, who lives in an extravagant and materialistic manner, tending to be something of a socialite
3. informal an instrument used to make balls of something: a melon baller.
4. carpentry a tool used to shape the end of a dowel