noun, plural skies. Often skies (for defs 1–4).
- the region of the clouds or the upper air; the upper atmosphere of the earth: airplanes in the sky; cloudy skies.
- the heavens or firmament, appearing as a great arch or vault.
- the supernal or celestial heaven: They looked to the sky for help.
- the climate: the sunny skies of Italy.
- Obsolete. a cloud.