firmament

/ˈfɜrməmənt/
noun
  1. The sky or heavens, especially when seen as a vast dome or arch.
    • The moon hung low in the firmament, casting a silver glow.
    • The stars shone brightly in the dark firmament.
    • Ancient people believed the firmament was a solid dome above the earth.
  2. A particular area of activity or interest, especially one that is prominent or high-level.
    • The company is a giant in the tech firmament.
    • She is a rising star in the political firmament.
    • New artists are constantly appearing in the musical firmament.
Antonyms
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