Whats is the meaning of sky?

1 : the upper atmosphere or expanse of space that constitutes an apparent great vault or arch over the earth. 2 : heaven sense 2. 3a : weather in the upper atmosphere. b : climate temperate English skies— G. G. Coulton.

What does it mean when someone says you are my sky?

When someone uses the metaphor “You are the sun in my sky,” he means that the person he is speaking to or writing about is the light in his life. Since the Earth revolves around the sun, this phrase can mean that a person’s life revolves around the person to whom he gave the compliment.