What is Belch ?
Belch is (noun) allowing air in the stomach to come up through the mouth He finished his meal and let out a loud belch. Synonym burp (NOTE: The plural is belches.) ((verb)) 1. to make air in the stomach come up through the mouth He wiped his mouth and belched. 2. to pour out of Dark smoke belched from the power station. 3. to belch out to send out large amounts of smoke, fumes or flames The power station was belching out dark smoke.
source: Easier English, Student Dictionary Upper Intermediate Level