n. pl. skies (skīz)
1. The expanse of air over any given point on the earth; the upper atmosphere as seen from the earth's surface.
2. often skies The appearance of the upper atmosphere, especially with reference to weather: Threatening skies portend a storm.
3. The celestial regions; the heavens: stars in the southern sky.
4. The highest level or degree: reaching for the sky.
v. skied (skīd), sky·ing, skies (skīz)
1. To hit or throw (a ball, for example) high in the air.
2. To hang (a painting, for example) high up on the wall, above the line of vision.
To jump very high in order to make a play, as in getting a rebound in basketball.
[Middle English ski, from Old Norse skȳ, cloud; see (s)keu- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.