Emily Dickinson Lexicon

JAW, n. [Fr. joue, the cheek. It coincides in origin with chaw, chew, Arm. joaga, to chew; javed or gaved, a jaw. In old authors, jaw is written chaw. It belongs to Class Cg. See Chaw and Chew.]

1. The bones of the mouth in which the teeth are fixed. They resemble a horse shoe. In most animals, the under jaw only is movable.
2. The mouth.
3. In vulgar language, scolding, wrangling, abusive clamor.