intransitive verb flared, flaring flar′·ing

1. 1. to blaze up with a sudden, bright light
   2. to burn unsteadily, as a flame whipped about by the wind
2. to burst out suddenly in anger, violence, etc.: often with up or out
3. to curve or spread outward, as the bell of a trumpet

Etymology: ME fleare < ?

transitive verb

1. to make flare
2. to signal with a flare

noun

1. a bright, unsteady blaze of light lasting only a little while; outburst of flame
2. 1. a very bright light used as a distress signal, to light up a landing field, etc.
   2. a substance burned to make such a light
3. a sudden, brief outburst, as of emotion or sound
4. 1. a curving or spreading outward, as of a skirt
   2. a part that curves or spreads outward
5. Astron.
   1. a short-lived, spotlike outburst of increased brightness on the sun, seen esp. near sunspots and often accompanied by X-rays, gamma rays, etc.
   2. a sudden, temporary increase in the brightness of any star
6. Photog. a foggy spot on film, caused by a reflection of light from the lens