Wag cooked meat outside for Moses (8)
I believe the answer is:
lawgiver
'moses' is the definition.
(I've seen this before)
'wag cooked meat outside' is the wordplay.
'cooked' indicates anagramming the letters (letters cooked into a new form).
'meat' becomes 'liver' (liver is a kind of meat).
'outside' means one lot of letters goes inside another.
'wag' anagrammed gives 'awg'.
'awg' going into 'liver' is 'LAWGIVER'.
'for' acts as a link.
(Other definitions for lawgiver that I've seen before include "One as Moses, Solon" , "Moses, for example" , "Legislator" .)