Wiktionary
alt. 1 (context chiefly US slang English) A violent thug, especially one employed as an enforcer by a criminal organization. 2 A person whose job is to break the legs of poultry in a food processing facility. 3 (context soccer English) A tackle or other on-field maneuver capable of breaking a player's leg. 4 (context cycling English) A demanding bicycling competition or the course on which such a competition is held. 5 (context cricket English) A cricketer who bowls leg breaks. 6 (context cricket English) A leg break ball. n. 1 (context chiefly US slang English) A violent thug, especially one employed as an enforcer by a criminal organization. 2 A person whose job is to break the legs of poultry in a food processing facility. 3 (context soccer English) A tackle or other on-field maneuver capable of breaking a player's leg. 4 (context cycling English) A demanding bicycling competition or the course on which such a competition is held. 5 (context cricket English) A cricketer who bowls leg breaks. 6 (context cricket English) A leg break ball.
Usage examples of "leg-breaker".
A quick comparison of his successful stolen bases versus times caught out in the attempt confirmed that he was an unsuccessful smalltime thief before La Plante took him on as a leg-breaker.
Tim was a born con artist, a smiler and a soother, not a leg-breaker or hit man.