A metal guard worn over the knuckles in fighting, especially to increase the effect of the blows.
More example sentences
- He removed his leather gloves, replacing them with brass knuckles in case a fight was looking to break out.
- It fit like brass knuckles only instead of knuckles, a sharp jagged edge protruded.
- The leader commands with a baseball bat in hand as the other two put on brass knuckles to fight with.