mouth

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Related to mouths: mouthed off

mouth,

entrance to the digestive and respiratory tracts. The mouth, or oral cavity, is ordinarily a simple opening in lower animals; in vertebrates it is a more complex structure. In humans, the mouth is defined in front and at the sides by the lips, jawbone, teethteeth,
hard, calcified structures embedded in the bone of the jaws of vertebrates that perform the primary function of mastication. Humans and most other mammals have a temporary set of teeth, the deciduous, or milk, teeth; in humans, they usually erupt between the 6th and 24th
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, and gums; in the rear it merges with the throat. The roof of the mouth is composed of the hard and soft palatespalate
, roof of the mouth. The front part, known as the hard palate, formed by the upper maxillary bones and the palatine bones, separates the mouth from the nasal cavity. It is composed of a bone plate covered with a layer of mucous membrane tissue.
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 and the floor of the mouth is formed by the tonguetongue,
muscular organ occupying the floor of the mouth in vertebrates. In some animals, such as lizards, anteaters, and frogs, it serves a food-gathering function. In humans, the tongue functions principally in chewing, swallowing, and speaking.
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, a muscular structure that contains the organs of taste (taste buds). The lips, palates, tongue, and teeth are the major components in speech formation, using the "raw sound" formed in the larynxlarynx
, organ of voice in mammals. Commonly known as the voice box, the larynx is a tubular chamber about 2 in. (5 cm) high, consisting of walls of cartilage bound by ligaments and membranes, and moved by muscles. The human larynx extends from the trachea, or windpipe.
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. The process of digestion begins in the mouth; the chewing and grinding action of the teeth reduces the food to a readily digestible substance. The enzymatic process of converting starch to sugar is initiated by salivary amylase (ptyalin) excreted by the three salivary glandssalivary glands
, in humans, three pairs of glands that secrete the alkaline digestive fluid, saliva, into the mouth. Most animals have salivary glands that resemble those in humans; however, in some animals these glands perform other functions.
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 located at the angle of the jawbone and under the tongue. Saliva produced in these glands moistens food, preparing it for processing in the digestive systemdigestive system,
in the animal kingdom, a group of organs functioning in digestion and assimilation of food and elimination of wastes. Virtually all animals have a digestive system. In the vertebrates (phylum Chordata, subphylum Vertebrata) the digestive system is very complex.
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.

Mouth

 

the part of a river that empties into a sea, lake, or another river. In rivers that dry out in their lower course, the place where the river terminates is designated the mouth.

Several types of mouth are distinguished. A simple mouth refers to the terminus of a river that does not divide into branches, such as the Tiber. Rivers may also terminate in deltas, as in the Nile; estuaries, as in the Thames; or limans, as in the Iuzhnyi Bug. A river may end in a discordant junction, which is characteristic of the tributaries of mountain rivers in which downcutting has been less intensive than in the principal river. If a river does not transport its waters to a sea, lake, or another river, it is sometimes said to terminate in a blind end.

Most large rivers that empty into a sea or large lake contain bars at the mouth; farther upriver are deep reaches that provide the customary wintering places for fish, such as the fish preserve pools in the Volga delta. The hydrological regime of river mouths is characterized by a complex variation in flow velocities, caused by such factors as ebb and flow, surge, increased flow rate during high water (ocean and lake rivers), and ice jams formed by drifting ice.

What does it mean when you dream about a mouth?

A big mouth indicates gossip and the spreading of lies, or perhaps spoken words of goodness and truth. Romantic or sexual urges are associated with this symbol, too.

mouth

[mau̇th]
(anatomy)
The oral or buccal cavity and its related structures.
(engineering acoustics)
The end of a horn that has the larger cross-sectional area.
(geography)
The place where one body of water discharges into another. Also known as influx.
The entrance or exit of a geomorphic feature, such as of a cave or valley.
(mining engineering)
The end of a shaft, adit, drift, entry, or tunnel emerging at the surface.
The collar of a borehole.
(science and technology)
Something resembling a mouth, that is, a place where one thing enters another or an opening at the receiving end of a container or enclosure.

mouth

1. the opening through which many animals take in food and issue vocal sounds
2. the system of organs surrounding this opening, including the lips, tongue, teeth, etc.
3. the visible part of the lips on the face
4. the point where a river issues into a sea or lake
5. the opening of a container, such as a jar
6. the opening of or place leading into a cave, tunnel, volcano, etc.
7. that part of the inner lip of a horse on which the bit acts, esp when specified as to sensitivity
8. Music the narrow slit in an organ pipe
9. the opening between the jaws of a vice or other gripping device
References in classic literature ?
Eat of it and begone, for if to-morrow at the noon you are found within a spear's throw of this kraal, you and those with you shall bide there forever, O Mouth of Dingaan the king
Have you a hut near by, O Chief Bulalio, foe of Dingaan the king, where I, the mouth of the king, may speak with you a while apart, for I would learn your message word by word that I may deliver it without fault.
Now Umslopogaas, still shaking in his limbs, answered "Follow me, O Mouth, and you, Galazi, stay with these men.
Astor, on the contrary, would be able to supply his proposed establishment at the mouth of the Columbia by sea, and to ship the furs collected there directly to China, so as to undersell the Northwest Company in the great Chinese market.
They hoped, too, by a timely move, to secure the mouth of the Columbia before Mr.
His main establishment once planted at the mouth of the Columbia, he looked with confidence to ultimate success.
Possibly seven or eight minutes later I heard Charley's voice as the Reindeer went past the mouth of the slough.
After waiting a few minutes longer, the crew hoisted the lateen sail, and Yellow Handkerchief steered down toward the mouth of San Rafael Creek.
The gag in my mouth prevented me from replying, and I could only lie there, helplessly fuming, while he rowed past the island and his voice slowly lost itself in the distance.
said Don Quixote, hearing the sad news his squire gave him; "I had rather they despoiled me of an arm, so it were not the sword-arm; for I tell thee, Sancho, a mouth without teeth is like a mill without a millstone, and a tooth is much more to be prized than a diamond; but we who profess the austere order of chivalry are liable to all this.
Joe's quick eye saw the opening, and he smashed straight out upon Ponta's mouth, following instantly with a half swing, half hook, for the jaw.
He gargled his mouth and throat, took a suck at a divided lemon, and all the while the towels worked like mad, driving oxygen into his lungs to purge the pounding blood and send it back revivified for the struggle yet to come.