gas accumulation; gas pocket
General term for a localized collection of gas, such as in a mine, pipeline, or geological formation.
A gas pocket formed in the tunnel and it was dangerous.
flatulence; abdominal bloating
Medical or everyday term for intestinal gas buildup causing discomfort.
I have severe bloating after meals and it's painful.
Compound of ガス (gas, from English) and 溜まり (accumulation, from verb 溜まる).