Alpenglow
Pronunciation : Al"pen*glow`
Part of Speech : n.
Definition : Defn: A reddish glow seen near sunset or sunrise on the summits of mountains; specif., a reillumination sometimes observed after the summits have passed into shadow, supposed to be due to a curving downward (refraction) of the light rays from the west resulting from the cooling of the air.
Source : Webster's Unabridged Dictionary, 1913