Astron.
a halo phenomenon in which a vertical streak of light appears above and below the moon, believed to be caused by the reflection of moonlight by ice crystals with vertical axes. Cf. sun pillar .
Astron.
a halo phenomenon in which a vertical streak of light appears above and below the moon, believed to be caused by the reflection of moonlight by ice crystals with vertical axes. Cf. sun pillar .
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012