Simple Definition of sky
: the space over the Earth where the sun, moon, stars, and clouds appear
Examples of sky in a sentence
There wasn't a cloud in the sky.
Dark clouds moved quickly across the sky.
Hailstones suddenly fell out of the sky.
The sun was high in the sky.
The forecast is for sunny skies tomorrow.
a patch of blue sky
Origin and Etymology of sky
Middle English, cloud, sky, from Old Norse skȳ cloud; akin to Old English scēo cloud
First Known Use: 13th century
Definition of sky
1 chiefly British : to throw or toss up : flip
2 : to hang (as a painting) above the line of vision
3 : to hit (a ball) high into the air
: to jump high <sky for a rebound>
First Known Use of sky
SKY Defined for Kids
History for sky
English owes a number of words to Old Norse, the language of the Viking raiders and settlers who came to England in the eighth to tenth centuries. The word sky, for example, though it dates to the Middle Ages, has its nearest relatives in modern Scandinavian languages (Danish and Swedish sky, “cloud”) rather than in Old English. Other common words borrowed from Old Norse are crawl, egg, kid, leg, root, seem, take, wing, and wrong.
Seen and Heard
What made you want to look up sky? Please tell us where you read or heard it (including the quote, if possible).