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English definition of “sky”

sky

noun uk   /skaɪ/ us  
A2 [S or U] the area above the earth, in which clouds, the sun, etc. can be seen: a blue/cloudy/dark sky Can you see those birds high up in the sky? We looked up at/into the sky at the sound of the plane. skies [plural] the sky in a particular state or place: For weeks we had cloudless blue skies. We're off to the sunny skies of Spain.
(Definition of sky from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
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