Sir Toby has the making of a big noise (5)
I believe the answer is:
belch
'making of a big noise' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Perhaps they are linked in a way I don't understand?
I don't understand how the remainder of the clue works.
Can you help me to learn more?
(Other definitions for belch that I've seen before include "Eructate" , "Unrefined report" , "Violently eject" , "Eructation" , "Vent air from the stomach through the mouth" .)