Look noble (4)
I believe the answer is:
peer
I believe this clue is a double definition.
'look' is the first definition.
(to peer at something is to look at it)
'noble' is the second definition.
(peers are members of the nobility)
(Other definitions for peer that I've seen before include "Social equal" , "Coequal" , "Lord of the realm" , "Look dimly at lord" , "one visiting ladies, say?" .)