professional boxing(n = noun.act) - boxing for money;
is a kind of sport, boxing, fisticuffs, pugilism

boxing, boxing day, boxing equipment, boxing glove, boxing match, boxing ring, health professional, professional, professional association, professional baseball, professional basketball, professional dancer, professional football, professional golf, professional golfer, professional life, professional organisation, professional organization, professional person, professional relation, professional tennis, professional tennis player, professional wrestling