Meaning of FLARE in English

FLARE

[noun] [C]There was a sudden flare when she threw the petrol onto the fire.A flare is also a very bright light or coloured smoke which can be used as a signal, or a device which produces this.The dinghy is equipped with flares to attract the attention of nearby ships or aircraft.(figurative) A further flare-up of rioting occurred later in the day.

Cambridge English vocab.      Кембриджский английский словарь.