knuckle

noun

1. a joint of a finger when the fist is closed

Definition categories: body, diarthrosis

Sentences with knuckle as a noun:

- brass knuckles

verb

1. press or rub with the knuckles

Definition categories: contact, press

2. shoot a marble while keeping one's knuckles on the ground

Definition categories: contact, shoot

Sentences with knuckle as a verb:

- He knuckled the sleep from his eyes.