Expose about meat (6)
I believe the answer is:
reveal
'expose' is the definition.
(I know that expose can be written as reveal)
'about meat' is the wordplay.
'about' becomes 're' ('re' means regarding or about).
'meat' becomes 'veal' (veal is a kind of meat).
're'+'veal'='REVEAL'
(Other definitions for reveal that I've seen before include "Expose or disclose" , "Remove cover or expose to view" , "Leaver (anag.)" , "Expose, divulge" , "Expose, remove covering" .)