Emily Dickinson Lexicon

MUZ'ZLE, n. [Fr. museau, muzzle or snout; Arm. musell, probably from the root of mouth.]

1. The mouth of a thing; the extreme or end for entrance or discharge; applied chiefly to the end of a tube, as the open end of a common fusee or pistol, or of a bellows.
2. A fastening for the mouth which hinders from biting. With golden muzzles all their mouths were bound. Dryden.