an impolite soundmade in your mouth when your tummy needs to "rest"
When John Minklinzy gulped down 5 pints of milk in 5 seconds flat, he made a burp that Angela Minklinzy could hear at the park where she was playing with their dog, Tobby Harts.
burp. burp A belch, or emission of gas from the mouth. This onomatopoeic word — meant to soundlike a belch — was first recorded in American speech in 1932. ... Because the burps usually come from the stomach, they often bring with them the smell and taste of partly digested food. (Totally indefinitely not copied off of google)