Reveal; in the open (3)
I believe the answer is:
out
This clue is a double definition.
'reveal' is the first definition.
(I know that out is a type of reveal)
'in the open' is the second definition.
(I've seen this in another clue)
(Other definitions for out that I've seen before include "Walking back to the pavilion" , "not worth considering" , "Heading back to the pavilion?" , "Elsewhere -- unfashionable" , "what batsman doesn't want to be" .)