Definitions
1.VerbTo give off sparks; to shine as if emanating sparks; to twinkle or glow.
2.VerbOf a star or other celestial body: to vary rapidly in brightness; to twinkle.
3.VerbEspecially of a phosphor: to emit a flash of light upon absorbing ionizing radiation.
4.VerbTo dazzle or to impress.
5.VerbTo throw off like sparks.