knuckle

Meanings

1. 1
   noun

   one of the joints of a finger, especially when the hand is closed

   He scraped a knuckle on the rough stone.

2. 2
   verb

   to press or rub with the knuckles

   She knuckled the sleep from her eyes.

From Middle English knokel, from Old English cnucel, 'knuckle, joint'.

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