The vault of heaven; the sky.
The upper air.
The vault of heaven, the sky, or the upper air.
Origin of welkin
- Middle English welken from Old English wolcen, weolcen cloud
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle English welkne, wolkne (“clouds, heavens"), from Old English wolcnu (“clouds"), plural of wolcen (“cloud"), from Proto-Germanic *wulkanÄ…, *wulkÅ, *wulkÃ´ (“cloud"), from Proto-Indo-European *welg-, *welk- (“wet, moist"). Cognate with Dutch wolk (“cloud"), Dutch welken (“to wither"), Low German Wulke (“cloud"), German Wolke (“cloud"), German welken (“to wither"). More at welk.