2. prone to revealing secrets; -- of people.
Syn. -- leaky, talebearing(prenominal), tattling(prenominal). [ WordNet 1.5 ]

So foul-mouthed a witness never appeared in any cause. Addison. [ 1913 Webster ]

That hot-mouthed beast that bears against the curb. Dryden. [ 1913 Webster ]

2. Aperson who is loud-mouthed. [ PJC ]

She was a fool to be mealy-mouthed where nature speaks so plain. L'Estrange. [ 1913 Webster ]

-- Meal"y-mouth`ness n. [1913 Webster]

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. [ 1913 Webster ]

3. (Saddlery) The crosspiece of a bridle bit, which enters the mouth of an animal. [ 1913 Webster ]

4. A principal speaker; one who utters the common opinion; a mouthpiece. [ 1913 Webster ]

Every coffeehouse has some particular statesman belonging to it, who is the mouth of the street where he lives. Addison. [ 1913 Webster ]

5. Cry; voice. [ Obs. ] Dryden. [ 1913 Webster ]

6. Speech; language; testimony. [ 1913 Webster ]

That in the mouth of two or three witnesses every word may be established. Matt. xviii. 16. [ 1913 Webster ]

7. A wry face; a grimace; a mow. [ 1913 Webster ]

Counterfeit sad looks,
Make mouths upon me when I turn my back. Shak. [ 1913 Webster ]

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. [ 1913 Webster +PJC ]

The mouth of them that speak lies shall be stopped. Ps. lxiii. 11. [ 1913 Webster ]

Whose mouths must be stopped. Titus i. 11. [ 1913 Webster ]

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. [ 1913 Webster ]

Mouthing out his hollow oes and aes. Tennyson. [ 1913 Webster ]

3. To form or cleanse with the mouth; to lick, as a bear her cub. Sir T. Browne. [ 1913 Webster ]

4. To make mouths at. [ R. ] R. Blair. [ 1913 Webster ]

I'll bellow out for Rome, and for my country,
And mouth at Caesar, till I shake the senate. Addison. [ 1913 Webster ]

2. To put mouth to mouth; to kiss. [ R. ] Shak. [ 1913 Webster ]

3. To make grimaces, esp. in ridicule or contempt. [ 1913 Webster ]

Well I know, when I am gone,
How she mouths behind my back. Tennyson. [ 1913 Webster ]

2. Having a mouth of a particular kind; using the mouth, speech, or voice in a particular way; -- used only in composition; as, wide-mouthed; hard-mouthed; foul-mouthed; mealy-mouthed. [ 1913 Webster ]

2. Hence, a small quantity. [ 1913 Webster ]

3. A statement that has a profound truth in it; as, you said a mouthful! [ informal ] [ PJC ]

2. An appendage to an inlet or outlet opening of a pipe or vessel, to direct or facilitate the inflow or outflow of a fluid. [ 1913 Webster ]

3. One who delivers the opinion of others or of another; a spokesman; as, the mouthpiece of his party. [ 1913 Webster ]

Egmont was imprudent enough to make himself the mouthpiece of their remonstrance. Motley. [ 1913 Webster ]

4. Hence: A person's lawyer. [ slang ] This is a term that was used sometimes in old movies. When a tough bad guy was arrested he might say “I ain't sayin' nothin' without my mouthpiece!” [ PJC ]