Refers to the rumbling sound made by the movement of gas in the intestines.
El borborigmo que escuché provenía de mi estómago vacío durante la reunión.
The borborygmus I heard came from my empty stomach during the meeting.
El borborigmo en mi estómago indicaba que era hora de comer algo.
The borborygmus in my stomach indicated that it was time to eat something.