belching

Belching is the act of expelling gas from the stomach through the mouth, usually with an audible sound.

It's a natural bodily function that can be triggered by swallowing air, eating too quickly, or consuming carbonated drinks.

While considered rude in many social settings, some cultures view it as a compliment to the cook.

The word also applies figuratively to things that spew forth dramatically: smokestacks belching black fumes or volcanoes belching ash.