Is there a formal single word for 'emit anal air'? I've heard 'eructate' being used, but this means air from the mouth only; not from the other end.
The action would be flatulate: To emit digestive gases from the anus, especially with accompanying sound.
Fart is the slang form.
After long hours of scouring the etymology of 'noisy bowels', I came across this gem.
Borborygm: The noise made by gas in the bowels.
Thought I'd share in my discovery.