Fewer around field grazer (3)
I believe the answer is:
ewe
'field grazer' is the definition.
(I've seen this in another clue)
'fewer around' is the wordplay.
'around' indicates a hidden word.
'EWE' is hidden in the letters of 'fewer'.
(Other definitions for ewe that I've seen before include "Source of milk" , "Farm animal" , "Lamb's mother" , "21a [SHEEP]" , "A palindromic sheep" .)