Revealing about meat (4)
I believe the answer is:
veal
'meat' is the definition.
(I know that veal is a type of meat)
'revealing about' is the wordplay.
'about' indicates a hidden word (the clue goes around or about the answer).
'VEAL' is hidden within 'revealing'.
(Other definitions for veal that I've seen before include "cuisine" , "Type of meat" , "Calves' flesh as food" , "what the meat course may be" , "meat, R [ROSE] maybe" .)