ruct- +

1. To eject wind from the stomach through the mouth; to eructate.
2. To issue with spasmodic force or noise.
3. To eject or throw up from the stomach with violence; to eruct.
4. To send out large amounts of steam, smoke, or gas, or come out of something in a thick cloud.
4. To eject violently from within; to cast forth; to emit; to give vent to; to vent (small opening for emission or escape).
5. Etymology: An altered form of belchen (1483) of earlier belken (about A.D. 1350), both variants of Middle English bolken, "to vomit, to overflow"; developed from Old English bilkettan (about A.D. 950), later bealcan, balcettan, bylcettan, "to belch, to vomit, to bring up wind from the stomach, to utter (words) vehemently".

This application is extended to volcanoes, cannons, etc.

Someone who, or that which belches; that is, to issue out with spasmodic force or noise.

1. Also known as belching, ructus, or eructation, it refers to the release of gas from the digestive tract (mainly esophagus and stomach) through the mouth.
2. To allow air from the stomach to come out through the mouth in a noisy way.
3. To gently rub a baby's back to help air to come out of his or her stomach.

It is often accompanied with a typical sound and sometimes an odor.

4. Etymology: an informal version of belch. Apparently an American-English imitation of the sound of belching.

1. To belch forth; such as, to eject gas from the stomach: "He was eructing stomach gasses through his mouth."
2. To emit or to issue violently, as matter from a volcano.

To eject wind from the stomach; to belch.

1. Volcanoes pouring out fumes or lava (or a deposit so formed).
2. An erumpent (bursting forth, breaking out) blast of gas, wind, or other matter ejected from earthy depths.
3. A reflex that expels wind noisily from the stomach through the mouth.
4. The act of belching or the explosive oral expulsion of gas from the stomach through the mouth.
5. Burping or belching; that is, casting up wind (expelling air) from the stomach through the mouth.

Depending on the cause, belching may change in duration and intensity. Causes include:

• Pressure caused by the unconscious swallowing of air.
• Consumption of gas-producing foods or drinks; such as, drinking carbonated beverages.
• Gastroesophageal reflux disease.

1. A reference to ejecting or sending out in large quantities: "The ejecting gases and dust from the volcano delayed flight schedules for several days."
2. A descriptive term for expelling gas from the stomach by belching or burping: "The eructing sounds coming from his stomach were very disturbing."

A neurosis characterized by repeated belching.

The act of belching wind from the stomach: "The ructations coming from the man were loud and frequent."