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false ribs

British  

plural noun

  1. any of the lower five pairs of ribs in man, attached behind to the thoracic vertebrae but in front not attached directly to the breastbone See floating rib

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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