1. a man with large, well-developed muscles, especially one who displays them or works as a bodybuilder or model
Usage: informal; often used in fitness and entertainment contexts
2. a man hired to use physical strength or intimidation to enforce someone's will; a thug or enforcer
Usage: informal; often derogatory

Examples

• The muscleman flexed his biceps on stage at the bodybuilding competition.
• He trained for years to become a muscleman and compete professionally.
• The crime boss sent his muscleman to collect the debt.
• Several musclemen worked as security guards at the nightclub.
• She admired the muscleman's dedication to fitness and nutrition.
• The movie featured a muscleman action hero who performed his own stunts.