Expose stomach for audience (4)
I believe the answer is:
bare
'expose' is the definition.
(baring is a kind of exposing)
'stomach for audience' is the wordplay.
'stomach' becomes 'bear' (both can mean to tolerate or endure).
'for audience' shows a homophone (sound like) (how it might sound to an audience).
'bear' sounds like 'BARE'.
(Other definitions for bare that I've seen before include "Stark - naked" , "Nude; uncover" , "Not clothed" , "Uncovered - unfurnished - unadorned" , "State of deciduous tree in winter" .)