Noun vault of heaven has 1 sense
  1. celestial sphere, sphere, empyrean, firmament, heavens, vault of heaven, welkin - the apparent surface of the imaginary sphere on which celestial bodies appear to be projected
    --1 is a kind of surface
    --1 has parts:
     apex, solar apex, apex of the sun's way; celestial point; nadir; zenith; zodiac
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