Angry stare (5)
I believe the answer is:
glare
'angry stare' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for glare that I've seen before include "Shine intensely" , "Angry stare" , "Stare angrily" , "Stare fiercely - 5 down (anag)" , "Too-bright light" .)