Lord - look at him! (4)
I believe the answer is:
peer
This clue could be a double definition.
'lord' is the first definition.
(I know that peer is a type of lord)
'look at him' is the second definition.
'peer' can be an answer for 'look' (peering is a kind of looking). I'm unsure of the 'at him' bit.
Can you help me to learn more?
(Other definitions for peer that I've seen before include "Peep; nobleman" , "Look closely at titled man?" , "unelected politician" , "Look hard at the nobleman" , "Look closely at lord" .)