Definition of mouth

• n. - 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.
• n. - An opening affording entrance or exit; orifice; aperture;
• n. - 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.
• n. - The opening or entrance of any cavity, as a cave, pit, well, or den.
• n. - The opening of a piece of ordnance, through which it is discharged.
• n. - The opening through which the waters of a river or any stream are discharged.
• n. - The entrance into a harbor.
• n. - The crosspiece of a bridle bit, which enters the mouth of an animal.
• n. - A principal speaker; one who utters the common opinion; a mouthpiece.
• n. - Cry; voice.
• n. - Speech; language; testimony.
• n. - A wry face; a grimace; a mow.
• v. t. - To take into the mouth; to seize or grind with the mouth or teeth; to chew; to devour.
• v. t. - To utter with a voice affectedly big or swelling; to speak in a strained or unnaturally sonorous manner.
• v. t. - To form or cleanse with the mouth; to lick, as a bear her cub.
• v. t. - To make mouths at.
• v. i. - To speak with a full, round, or loud, affected voice; to vociferate; to rant.
• v. i. - To put mouth to mouth; to kiss.
• v. i. - To make grimaces, esp. in ridicule or contempt.