GNU Collaborative International Dictionary of English

Found 3 definitions 

  1.       

    Mouth , n.; pl. Mouths . [OE. mouth, muþ, AS. mūð; akin to D. mond, OS. mūð, G. mund, Icel. muðr, munnr, Sw. mun, Dan. mund, Goth. munþs, and possibly L. mentum chin; or cf. D. muil mouth, muzzle, G. maul, OHG. mūla, Icel. mūli, and Skr. mukha mouth.]
    1. The opening through which an animal receives food; the aperture between the jaws or between the lips; also, the cavity, containing the tongue and teeth, between the lips and the pharynx; the buccal cavity.
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    2. Hence: An opening affording entrance or exit; orifice; aperture; as: (a) The opening of a vessel by which it is filled or emptied, charged or discharged; as, the mouth of a jar or pitcher; the mouth of the lacteal vessels, etc. (b) The opening or entrance of any cavity, as a cave, pit, well, or den. (c) The opening of a piece of ordnance, through which it is discharged. (d) The opening through which the waters of a river or any stream are discharged. (e) The entrance into a harbor.
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    3. (Saddlery) The crosspiece of a bridle bit, which enters the mouth of an animal.
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    4. A principal speaker; one who utters the common opinion; a mouthpiece.
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      Every coffeehouse has some particular statesman belonging to it, who is the mouth of the street where he lives.
      Addison.

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    5. Cry; voice. [Obs.]
      Dryden.

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    6. Speech; language; testimony.
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      That in the mouth of two or three witnesses every word may be established.
      Matt. xviii. 16.

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    7. A wry face; a grimace; a mow.
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      Counterfeit sad looks,
      Make mouths upon me when I turn my back.
      Shak.

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      Down at the mouth or Down in the mouth, chapfallen; of dejected countenance; depressed; discouraged. [Obs. or Colloq.] -- Mouth friend, one who professes friendship insincerely. Shak. -- Mouth glass, a small mirror for inspecting the mouth or teeth. -- Mouth honor, honor given in words, but not felt. Shak. -- Mouth organ. (Mus.) (a) Pan's pipes. See Pandean. (b) An harmonicon. -- Mouth pipe, an organ pipe with a lip or plate to cut the escaping air and make a sound. -- To stop the mouth, to silence or be silent; to put to shame; to confound. -- To put one's foot in one's mouth, to say something which causes one embarrassment. -- To run off at the mouth, to speak excessively. -- To talk out of both sides of one's mouth, to say things which are contradictory.
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      +PJC
      The mouth of them that speak lies shall be stopped.
      Ps. lxiii. 11.

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      Whose mouths must be stopped.
      Titus i. 11.

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  2.       

    Mouth , v. t. [imp. & p. p. Mouthed ; p. pr. & vb. n. Mouthing.]
    1. To take into the mouth; to seize or grind with the mouth or teeth; to chew; to devour.
      Dryden.

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    2. To utter with a voice affectedly big or swelling; to speak in a strained or unnaturally sonorous manner; as, mouthing platitudes. “Mouthing big phrases.” 
      Hare.

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      Mouthing out his hollow oes and aes.
      Tennyson.

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    3. To form or cleanse with the mouth; to lick, as a bear her cub.
      Sir T. Browne.

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    4. To make mouths at. [R.]
      R. Blair.

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  3.       

    Mouth, v. i.
    1. To speak with a full, round, or loud, affected voice; to vociferate; to rant.
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      I'll bellow out for Rome, and for my country,
      And mouth at Caesar, till I shake the senate.
      Addison.

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    2. To put mouth to mouth; to kiss. [R.]
      Shak.

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    3. To make grimaces, esp. in ridicule or contempt.
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      Well I know, when I am gone,
      How she mouths behind my back.
      Tennyson.

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