knuckleduster

n.[常作～s]=brass knuckles

金属握把的突起用以保护手指的，戴在拳头上的一种武器。

名词

1. The criminal was arrested for possession of a knuckleduster.
这名罪犯因持有金属握把而被逮捕。

2. It is illegal to carry a knuckleduster in many countries.
在许多国家携带金属握把是非法的。