from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Archaic The vault of heaven; the sky.
- n. Archaic The upper air.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. The sky, the upper air; the heavens.
from the GNU version of the Collaborative International Dictionary of English
- n. The visible regions of the air; the vault of heaven; the sky.
from The Century Dictionary and Cyclopedia
- n. The sky; the vault of heaven; the heavens.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
Middle English welken, from Old English wolcen, weolcen, cloud.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle English welkne, wolkne ("clouds, heavens"), from Old English wolcnu ("clouds"), plural of wolcen ("cloud"), from Proto-Germanic *wulkanan, *wulkō, *wulkô (“cloud”), from Proto-Indo-European *welg-, *welk- (“wet, moist”). Cognate with Dutch wolk ("cloud"), Low German Wulke ("cloud"), German Wolke ("cloud"), German welken ("to wither"). More at welk. (Wiktionary)