Expose stomach reportedly (4)
I believe the answer is:
bare
'expose' is the definition.
(baring is a kind of exposing)
'stomach reportedly' is the wordplay.
'stomach' becomes 'bear' (both can mean to tolerate or endure).
'reportedly' shows a homophone (sound like).
'bear' sounds like 'BARE'.
(Other definitions for bare that I've seen before include "Naked or empty" , "Unclothed or unadorned" , "Without protective covering" , "Denuded" , "State of deciduous tree in winter" .)