noun

a person who is tough and aggressive and enjoys a fight or argument.

thick-necked bruisers in shell suits

thug,ruffian,hoodlum,bully boy,bully,bandit,mugger,gangster,terrorist,gunman,murderer,killer,hitman,assassin,hooligan,vandal,Yardie,tough,hired gun,rough,bovver boy,lager lout,chav,hoodie,ned,hood,goon,roughie,hoon,cut-throat,desperado,myrmidon