sun pillar: Meaning and Definition of

sun' pil"lar

Pronunciation: [key]
— Astron. Astron.
  1. a halo phenomenon in which a vertical streak of light appears above and below the sun, believed to be caused by the reflection of sunlight by ice crystals with vertical axes. Cf.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
sun parlor sun porch
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