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: from Old English bealcan, "bring up wind from the stomach"; also, "swell, heave", of echoic origin.

This application is extended to volcanoes, cannons, etc.

Someone who, or that which, belches.

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.

1. To belch forth, as gas from the stomach.
2. To emit or issue violently, as matter from a volcano.
3. To expel stomach gases through the mouth.

To eject, as wind, from the stomach; to belch.

1. A reference to volcanoes pouring out fumes or lava (or a deposit so formed).
2. An erumpent (bursting forth) 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, of expelling 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.

The act of belching wind from the stomach.