A mouth bar is a bar in a river that is typically created in the middle of a channel in a river delta. It is created by a positive feedback between mid-channel deposition and flow divergence. As the flow diverges near the ocean, sediment settles out in the channel and creates an incipient mouth bar. As flow is routed around the incipient bar, additional sediment is deposited on the incipient bar. This continued process results in the formation of a full-fledged mouth bar, which causes the channel to bifurcate. This continued process leads to the characteristic fractal tree pattern found in some prograding river-dominated deltas.

The mouth is the first portion of the alimentary canal that receives food and saliva. The oral mucosa is the mucous membrane epithelium lining the inside of the mouth.

In addition to its primary role as the beginning of the digestive system, in humans the mouth also plays a significant role in communication. While primary aspects of the voice are produced in the throat, the tongue, lips, and jaw are also needed to produce the range of sounds included in human language.

The mouth, normally moist, is lined with a mucous membrane, and contains the teeth. The lips mark the transition from mucous membrane to skin, which covers most of the body.

The first space of the mouth is the mouth cavity, bounded laterally and in front by the alveolar arches (containing the teeth), and posteriorily by the isthmus of the fauces. The oral cavity is also known as the mouth which swallows food that then goes down the esophagus and into the stomach.

The mouth plays an important role in eating, drinking and breathing. Infants are born with a sucking reflex, by which they instinctively know to suck for nourishment using their lips and jaw.

Bar may refer to:

Big Mouth (Lakota: Itȟáŋka) (born 1822–died October 29, 1869) was an Oglala-born chieftain of the Brulé Lakota, highly regarded by the Brulé for his bravery and aggressive military leadership. He was one of the chiefs who signed the second Treaty of Fort Laramie in 1868 and remained a bitter opponent of further American settlement, ridiculing Spotted Tail and other Sioux chieftains upon their return from a mission to Washington, DC. He was sixth son of Old Chief Smoke (1774–1864) and twin brother of Blue Horse.

One of the principal chiefs at the Whetstone Agency, located along the Missouri River, where most of the Brulé and Oglala bands had gathered, Big Mouth gained increasing support for his stance among members of the tribe. He criticized what he described as Spotted Tail's reversal of Sioux policy, saying Spotted Tail had been entertained by American politicians and given a personal tour through the major cities of the east coast. Faced with increasing opposition to his leadership, Spotted Tail visited Big Mouth at his lodge, where, upon approaching the entrance, Big Mouth was seized by two warriors and held down while Spotted Tail shot and killed him.

Michael Winslow (born September 6, 1958) is an American actor and a comedian billed as the "Man of 10,000 Sound Effects" for his ability to make realistic sound effects using only his voice.

Winslow was born in Spokane, Washington, the son of Robert and Verdie Winslow. He attended the Lisa Maile School of Acting, Modeling and Imaging. He also studied architecture.^{[citation needed]}

His first television appearance was on The Gong Show in which he squeezed in spot-on sound-alikes of Benji the movie dog, Jimi Hendrix, and Led Zeppelin's "Immigrant Song". He is best known for his role as Sgt. Larvelle "Motor Mouth" Jones in the Police Academy series of movies and TV shows. In 1985, Island released a 12" of Michael Winslow titled "I Am My Own Walkman". He also appeared as a radar operator in the movie Spaceballs. Winslow is also a motivational speaker. Since the fall of 2008, Winslow has hosted the motion picture television series called "Way Back Wednesday with Winslow" on the cable superstation WGN America, which features movies mostly released in the 1980s. Michael continues to perform stand-up comedy around the globe.