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

  • noun The enclosing structure formed by the ribs and the bones to which they are attached.

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

  • noun anatomy A part of the skeleton within the thoracic area consisting of ribs, sternum and thoracic vertebrae.
  • noun The enclosed area created by and within the ribs.

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

  • noun the bony enclosing wall of the chest


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