from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A protective box with one open end or more, used for storing a book.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. A box, open on one end, for keeping a set of books together


slip +‎ case (Wiktionary)



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  • A box with one open side into which a volume or a multi-volume set is placed for protection. Publishers often issue a slipcase with two- and three-volume sets.

    February 25, 2008