noun
- A joint of a finger when the fist is closed.
- synonyms: knuckle joint, metacarpophalangeal joint
verb
- Press or rub with the knuckles.
- Shoot a marble while keeping one's knuckles on the ground. .
WordNet 3.0 © 2006 by Princeton University
| APA | WordNet. (2010). knuckle. Retrieved September 20, 2026, from http://smartdefine.org/knuckle/definitions/1213543 |
| Chicago | WordNet. 2010. "knuckle" http://smartdefine.org/knuckle/definitions/1213543 (accessed September 20, 2026). |
| Harvard | WordNet 2010, knuckle, Smart Define, viewed 20 September, 2026, <http://smartdefine.org/knuckle/definitions/1213543>. |
| MLA | WordNet. "knuckle" 23 October 2010. Web. 20 September 2026. <http://smartdefine.org/knuckle/definitions/1213543> |