Noble squint (4)
I believe the answer is:
peer
I believe this is a double definition.
'noble' is the first definition.
(peers are members of the nobility)
'squint' is the second definition.
(I've seen this in another clue)
(Other definitions for peer that I've seen before include "Equal; nobleman" , "Struggle to see; equal" , "Member of the House of Lords" , "Look with difficulty; equal" , "Person of equal standing" .)