Definition of welkin in English:

welkin

noun

literary
  • The sky or heaven.

    • ‘The loud noise of rushing elephants resembled the roars of the clouds in the welkin, in the season of rains.’
    • ‘When the welkin had ceased to ring with their laughter and screeches, it was customary to join forces and proceed arm-in-arm to spend the evening in the town.’

Origin

Old English wolcen ‘cloud, sky’, of West Germanic origin; related to Dutch wolk and German Wolke.

Pronunciation

welkin

/ˈwɛlkɪn/