What's the medical term for stomach grumbling?

Millions,

There’s this amazing word that means, essentially, stomach grumbling, which if I remember right begins with a “b.” After copious searching, the closest I got was “gastralgia” and “Taco Bell gut.” Does any one know this word? Or is your google-fu a higher level than mine? (I’m a brown belt)

Borborygmi.

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