Welkin

n.

1.

The visible regions of the air; the vault of heaven; the sky. On the welkne shoon the sterres lyght. - Chaucer. The fair welkin foully overcast. - Spenser. When storms the welkin rend. - Wordsworth.

Noun

1.

welkin - the apparent surface of the imaginary sphere on which celestial bodies appear to be projected Synonyms: celestial sphere, empyrean, firmament, heavens, vault of heaven, sphere

Caelus, aerosphere, air, atmosphere, azure, biosphere, blue sky, caelum, canopy, canopy of heaven, cerulean, cope, ecosphere, empyrean, ether, firmament, gaseous envelope, heaven, heavens, hyaline, lift, lifts, noosphere, sky, starry heaven, the blue, the blue serene, vault, vault of heaven