knuckles
/ˈnʌkəlz/
verb
- To press or rub with the knuckles, often as a form of greeting or punishment.
- He knuckled his friend's shoulder as a playful greeting.
- She knuckled the dough to knead it properly.
- The teacher knuckled the student's head for talking in class.
noun
- The joints of the fingers, especially where they meet the hand.
- He cracked his knuckles before starting to type.
- Her knuckles turned white as she gripped the steering wheel.
- The boxer's knuckles were bruised after the fight.
- A part of a machine or tool that functions like a joint, allowing movement.
- The mechanical arm's knuckles needed replacement.
- The robot's knuckles allowed its fingers to bend smoothly.
- He oiled the knuckles of the old pliers to loosen them.