Bruiser

Noun

 * : In contact sports, an athlete whose size, strength, and/or aggressiveness make it likely that he will cause athletes on the opposing team to suffer physical punishment.
 * 1) By extension, a tall, strong, heavily built man, especially one prone to physical violence.
 * 2) A thug.

Thesaurus
Chinese boxer, bantamweight, black belt, bodyguard, bouncer, boxer, brown belt, enforcer, featherweight, fighter, fisticuffer, flyweight, goon, gorilla, gun, gunsel, hatchet man, heavyweight, hellion, holy terror, hood, hoodlum, hooligan, karate expert, light heavyweight, lightweight, middleweight, mug, mugger, muscle man, palooka, plug-ugly, prizefighter, pug, pugilist, rodman, roughneck, ruffian, savate expert, sparrer, strong-arm man, terror, thug, torpedo, tough, tough guy, trigger man, ugly customer, welterweight