Look out, Emin! (4)
I believe the answer is:
mien
'look' is the definition.
(thesaurus)
'out emin' is the wordplay.
'out' indicates an anagram.
'emin' with letters rearranged gives 'MIEN'.
(Other definitions for mien that I've seen before include "(One's) manner, bearing" , "A face like mine" , "A face - maybe mine" , "attitude" , "aspect" .)