goon

名词 goon:

1. an awkward stupid person
   同义词：lout, clod, stumblebum, oaf, lubber, lummox, lump, gawk
2. an aggressive and violent young criminal
   同义词：hood, hoodlum, punk, thug, tough, toughie, strong-armer

goon

n.Slang （名词）【俚语】
A thug hired to intimidate or harm opponents.
打手：一个受雇用去恐吓或伤害对手的暴徒
A stupid or oafish person.
愚蠢或痴呆的人

来源：
Probably ultimately short for gooney [simpleton]
可能最终为 gooney的简写[傻瓜；呆子]