from The American Heritage® Dictionary of the English Language, 5th Edition.

  • noun Floating ice that has been driven together into a single mass.

from The Century Dictionary.

  • noun In the polar seas, a collection of large pieces of floating ice of indefinite extent. Compare pack, n., 8.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • noun A large consolidated mass of floating sea ice.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • noun a large expanse of floating ice


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  • Merriam-Webster Dictionary:


    Date: 1850

    : sea ice formed into a mass by the crushing together of pans, floes, and brash

    January 30, 2008