Flare

1. To flame up with a bright, wavering light. The fire flared as the wind increased.
2. To burst into intense, sudden flame. Suddenly the fire flared when as the gas can exploded.
3. To erupt or intensify suddenly. Tempers flared at the meeting.
4. To become suddenly angry. He flared when they asked him that question.
5. To expand or open outward in shape; a skit that flares from the waist. Her nostrils flared with anger.
6. A device that produces a bright light for signaling. Light a flare when your car is disabled on the freeway.
7. An expanding or opening outward. The copper fitting must be flared to make the joint tight.
8. A solar flare. A solar flare can disrupt communications.