noun:a long, angry look
He gave her a cold glare before walking out of the room without saying another word.
verb:to stare at someone in an angry or fierce way
She glared at him across the room, clearly upset by what he had said in front of everyone.
noun:a strong, harsh light that is difficult to look at
The glare from the car headlights made it hard for me to see the road while driving at night.