The Latin word for chewing gave us the name of the bone that does it — mandible literally means "the chewer."
The jaw or jawbone, especially the lower jaw in mammals, or either part of the beak in birds.
From Latin mandibula meaning jaw, from mandere meaning to chew Key roots: *mendh- (Proto-Indo-European: "to chew").
Insects have mandibles too — their jawlike mouthparts. The word has been used for arthropod anatomy since the 18th century, making it one of the few anatomical terms that applies equally to humans, birds, and insects despite their vastly different jaw structures.