the mandible or lower part of the skull of a vertebrate that frames the mouth and holds the teeth. In higher vertebrates the lower jaw is fused to the cranium and the upper jaw
noun
2. anatomy, zoology
(in mammals and many vertebrates) the hinged part of the jaw that is attached to the skull
Examples of 'lower jaw' in a sentence
lower jaw
He began by concentrating on two reasonably intact sections of lower jaw.
Forbes, Bryan A SONG AT TWILIGHT (2001)
He didn't actually grind his teeth but his lower jaw moved in a clamped, muscle-bound sort of way.