Zodiacal Light, a track of light of triangular figure with its base on the horizon, which in low latitudes is seen within the sun's equatorial plane before sunrise in the E. or after sunset in the W., and which is presumed to be due to a glow proceeding from some illuminated matter surrounding the sun.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Zodiac * Zohar