Look about equal (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)
'equal' is the second definition.
(I know that equal can be written as peer)
'about' acts as a link.
(Other definitions for peer that I've seen before include "Struggle to look" , "Look closely - nobleman" , "Look dimly at lord" , "Squint" , "Look closely at lord" .)