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What does the word mouth mean?

• Superior orifice of alimentary canal in which mastication takes place. The opening of a cavity.

• This word sometimes signifies the cavity situate between the jaws, and containing the tongue, &c.; - at others, the outher orifice of that cavity. The mouth, in the first acceptation, Cavitas seu Spatium Oris, is the cavity; bounded, above, by the palatine arch; below, by the toungue; before, by the lips; and behind, by the velum palati and pharynx. The sides of the mouth and the organs it contains are lined by a mucous membrane. The anterior aperture of the mouthis, sometimes, called facial- the posterior, pharyngeal. In the mouth are the teeth, gums, alveolar margins, tongue; the excretory ducts of the salivary glands, and those of a number of mucous follicles, &c. It is in this cavity that the food is cut, torn, or bruised by the teeth; is impregnated with salive, and formed into a mass or bolus, which is then subjected to the act of deglutition. The mouth contains the organs of taste; and it serves in respiration, articulation, expectoration, suction, &c.

• Os, Apertura, Orificium, Hiatus, Peristomium, is, also, applied to the open extremities of vessels or other canals.

• [ Latin] The entrance to the alimentary canal; the oval cavity in which mastication is performed; also in a limited sense, the anterior opening of this cavity bounded by the lips.

• [ Latin] The entrance to any cavity; as M. of the uterus.

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