noun

welkin

WEL-kin/ˈwelkɪn/

The sky or heavens, especially in poetry.

High clouds spread across the blue welkin above the distant horizon.

An expansive blue sky with high, softly layered clouds above a very low, distant horizon, making the heavens themselves the unmistakable subject.

Etymology

Old English wolcen meant both a cloud and the dome of the heavens. Welkin preserves the broader image of the sky as the region of clouds, now chiefly in poetry.

In context

Libranima337:45

made the welkin ring with words to this effect

Don Quixote - Cervantes (Illustrated Audiobook) Part 4 of 4

More examples

The poet describes the welkin as a vast blue sea.
Their joyful singing makes the welkin ring.
Storm clouds gather across the welkin.

Similar words

sky: Sky is the ordinary word, without a poetic tone.
heavens: Heavens sounds grand or literary and can also suggest divinity.