Look in tears, perhaps? (5)
I believe the answer is:
stare
'look' is the definition.
(I know that stare is a type of look)
'tears perhaps?' is the wordplay.
'perhaps?' indicates an anagram (I've seen 'perhaps' mean this).
'tears' anagrammed gives 'STARE'.
'in' is the link.
(Other definitions for stare that I've seen before include "'Look fixedly, without blinking (5)'" , "Gawp" , "bird" , "Rates (anag.)" , "Gaze fixedly" .)