knuckle
US /ˈnʌkəl/
・UK /'nʌkl/
B2
noun
- Rounded bone where the fingers can bend
- A joint of a finger when the fist is closed.
- A cut of meat from the joint of an animal.
other
- To apply oneself seriously to a task.
Examples
He rubbed his hands together, cracking his knuckles as he tried to control his anger.
(figurative) The Assistant Manager was rapped over the knuckles for criticizing the company in the press.