Wiktionary
n. masseter; the large muscle which raises the under jaw, and assists in mastication.
Usage examples of "jaw muscle".
The smooth arch of the parietals, ftised to the declivity of the temporal, Nvith the small ridge where the jaw muscle originated, the jutting projection that meshed itself with the maxillary into the graccfiiI curve of the squamosal arch.
He fixed his attention on the tricky road again, but his jaw muscle clenched every few seconds and I figured he was trying to decide whether I needed to go see Dr.
He peered at Rider, whose jaw muscle kept working as though he were chewing tobacco.
She heard the words and watched the jaw muscle jerk and beat and pop a small beast inside his cheek.
Jeffers felt his jaw muscle ache from how fiercely he was gritting his teeth and made himself turn away from the plot.