Possibly reveals a few (7)
I believe the answer is:
several
'a few' is the definition.
(I've seen this before)
'possibly reveals' is the wordplay.
'possibly' indicates anagramming the letters.
'reveals' with letters rearranged gives 'SEVERAL'.
(Other definitions for several that I've seen before include "three or four" , "Indefinite number more than two or three, but not many" , "Assorted" , "quite a lot" , "Reveals (anag.)" .)