Lord, look! (4)
I believe the answer is:
peer
I believe this clue is a double definition.
'lord' is the first definition.
(I've seen this before)
'look' is the second definition.
(peering is a kind of looking)
(Other definitions for peer that I've seen before include "Noble; look with difficulty" , "Equal; nobleman" , "Struggle to look" , "Person of equal standing" , "Aristocrat" .)