I. noun 1.
‹informal› a tough disciplinarian or taskmaster
• to be one of the world’s best chefs, you have to be a ball-breaker.
‹informal› a dominating or threatening woman who destroys a man’s self-confidence.
‹informal› a demanding and punishing task or situation
• the early stretch of the race is the ball-breaker.
II. derivatives ball-breaking adjective