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

  • n. A cranial bone consisting of a vertical portion corresponding to the forehead and a horizontal portion that forms the roofs of the orbital and nasal cavities.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. The bone of the forehead.

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

  • n. the large cranial bone forming the front part of the cranium: includes the upper part of the orbits


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