查词历史：

knuckleduster knoxvillite

knuckleduster
[英] [ˈnʌklˌdʌstə] [美] [ˈnʌkəlˌdʌstɚ] 生词本

n.

  • 柯林斯高阶英汉双解学习词典

1. N-COUNT 指节金属套（用作武器） A knuckle-duster is a piece of metal that is designed to be worn on the back of a person's hand as a weapon, so that if they hit someone they will hurt them badly. 
in AM, use 美国英语用 brass knuckles