- Knuckles is also the name of a Sonic the Hedgehog-related video game character
A knuckle, in anatomy, is where two bones join in the hands or feet. When talking about humans, knuckles most often refer to the joints in the fingers.
Animal knuckles, such as pig knuckles are sometimes sold as food.
Images for kids
Clenched fist with knuckles (encircled in red)
Motorcycle racing gloves with titanium knuckle protectors