1. a person or thing that breaks, destroys, or puts an end to something
2. used as a form of address to a man or boy, especially in an aggressive or confrontational way
Usage: informal

Examples

• The crime buster worked tirelessly to clean up the neighborhood.
• That new vacuum cleaner is a real dust buster.
• Listen here, buster, you can’t park there.
• The myth buster proved that the old story wasn’t true.
• Hey buster, watch where you’re going!
• The trust buster broke up the large monopoly.
• Don’t get smart with me, buster.