What does the word welkin mean?

Usage examples for welkin

  1. A greybeard's ire shall never-, ' while the hero remarks that 'the welkin reddenes i' the west. – Reviews by Oscar Wilde
  2. Then leaped she to her feet with one cry that methought would 'a' cracked the welkin in twain above our heads. – A Brother To Dragons and Other Old-time Tales by Amelie Rives