He busted his knuckles while trying to fix the car engine.
Он разбил свои костяшки, пытаясь починить двигатель машины.
Definitions
To cause someone to injure or scrape the skin on their knuckles, often as a result of physical work, a fight, or accidentally hitting something hard. It can also be used figuratively to mean giving someone a hard time or reprimanding them.
