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Meaning of ball-buster

ball-bust•er

Pronunciation: (bôl'bus"tur), [key]
— n. Slang (vulgar)
  1. an arduous, often unpleasant task.
  2. a person who makes great demands on others; taskmaster. Also called
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.