flare

a shape that spreads outward

• “the skirt had a wide flare”

a sudden burst of flame

a burst of light used to communicate or illuminate

reddening of the skin spreading outward from a focus of infection or irritation

a sudden recurrence or worsening of symptoms

• “a colitis flare”
• “infection can cause a lupus flare”

a sudden eruption of intense high-energy radiation from the sun''s surface; associated with sunspots and radio interference

am unwanted reflection in an optical system (or the fogging of an image that is caused by such a reflection)

a sudden outburst of emotion

• “she felt a flare of delight”
• “she could not control her flare of rage”

a device that produces a bright light for warning or illumination or identification

a short forward pass to a back who is running toward the sidelines

• “he threw a flare to the fullback who was tackled for a loss”

(baseball) a fly ball hit a short distance into the outfield

burn brightly

• “Every star seemed to flare with new intensity”

become flared and widen, usually at one end

• “The bellbottom pants flare out”

shine with a sudden light

• “The night sky flared with the massive bombardment”

erupt or intensify suddenly

• “Unrest erupted in the country”
• “Tempers flared at the meeting”
• “The crowd irrupted into a burst of patriotism”