intransitive verb
Definition: To suddenly become very angry or to burst into bright flames.
Example: His temper flared when he heard the unfair criticism.
noun
Definition: A sudden burst of light or flame, often used for signaling or illumination.
Example: The rescue team used a flare to signal for help during the night.
transitive verb
Definition: To make something burn brightly or to cause it to produce a sudden burst of light.
Example: The rescue team used a flare to signal their location to the helicopter.