A tall, strong, heavily built person, usually a man, especially one prone to physical violence; a strong and tough person.
In contact sports, an athlete whose size, strength, and/or aggressiveness make it likely that they will cause athletes on the opposing team to suffer physical punishment.
A machine for bruising oats.
A person who enjoys arguing with others.
A professional boxer.
A soldier or a subordinate civil officer who executes orders of a superior without protest or pity (sometimes applied to bailiffs, constables, etc).