Shakespeare's Sir Toby (5)
I believe the answer is:
belch
'shakespeare's sir toby' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for belch that I've seen before include "Expel (smoke) forcefully" , "Unrefined report" , "Eructation" , "Emit wind rudely from mouth" , "Emit wind or smoke" .)