Flare meaning : A sudden bright light. A source of brightly burning light or intense heat. A sudden eruption or outbreak; a flare-up. A widening of an object with an otherwise roughly constant width. (in plural) Bell-bottom trousers. The transition from downward flight to level flight just before landing. A low fly ball that is hit in the region between the infielders and the outfielders. A route run by the running back, releasing toward the sideline and then slightly arcing upfield looking for a short pass. Short for lens flare. To cause to burn. To cause inflammation; to inflame. To open outward in shape. To (operate an aircraft to) transition from downward flight to level flight just before landing. To blaze brightly. To shine out with a sudden and unsteady light; to emit a dazzling or painfully bright light. To shine out with gaudy colours; to be offensively bright or showy. To suddenly happen or intensify. To suddenly erupt in anger. To be exposed to too much light.