from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A rosy glow that suffuses snow-covered mountain peaks at dawn or dusk on a clear day.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A rosy or reddish glow seen near sunset or sunrise on the summits of mountains, especially snow covered mountains.
from the GNU version of the Collaborative International Dictionary of English
- n. 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.
from The Century Dictionary and Cyclopedia
- n. The glow upon the Alps; a peculiar reflection of sunlight from their snowy heights, after the sun has disappeared to the valleys, or just before daybreak; the last or first rays of the sun among the Alps, casting a rich purple tint, an effect sometimes heightened by a certain amount of humidity in the atmosphere.
Partial translation of German Alpenglühen : Alpen, Alps + glühen, to glow.(American Heritage® Dictionary of the English Language, Fourth Edition)
A calque of German Alpenglühen, from Alpen ("Alps") + glühen ("to glow"). (Wiktionary)