A gas flare is a tall chimney used by oil wells and refineries to vent waste natural gas and other flammable gases that are not economical to retain. The flammable gases are burned as they exit the chimney, producing a bright flame.
Also known as bellbottoms, flares are a style of pants in which the bottom ends of the legs broaden out into wide bell-like shapes.
A solar flare is an eruption of plasma from the surface of the sun. Solar flares result in a surge in the density and velocity of the solar wind, which can cause radiation damage to equipment located beyond Earth's magnetosphere.
A flare is also an aircraft landing maneuvre. It is a short skid of the tyres on the plane. The plane's wheels are preferrably stationary when landing to enhance the grip of the aircraft to the runway.
See also Flare Technology