Palpebral swelling (4)
I believe the answer is:
stye
'palpebral swelling' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for stye that I've seen before include "Ocular inflammation" , "Swelling near the eye" , "Viewer's complaint" , "pain for the observer" , "Inflammation around the eye" .)