After an evening of pizza eating, there was some tummy talk.
The Four-Year-Old: “Daddyo, have you ever made people eat food and then listened to their tummies?”
Daddyo: “No. I have not done that. Do you want to know what that sound is called?”
The Four-Year-Old: “Yeah.”
The Four-Year-Old: “Why is it called that?”
Daddyo: “I don’t know. I think it’s from some old Greek word that probably sounded like the noise tummies make.”
Mommyo surreptitiously Asks the iPhone. According to Wikipedia, borborygmi (the singular is borborygmus, but who ever hears just one?) comes from the ancient Greek word borborugmos. And yes, borborugmos is some ancient Greek’s verbal approximation of the stomach noises themselves.
Daddyo, I bow down to you, oh Sage of Etymology.