talipes equinus
noun
                                                                                                                            
                                                            talipes equi·nus
                    
                                                                                                              
                                                                                                                                  -ˈek-wi-nəs 
                                                      
                                                          
            
                                
              
          
                                                      : a congenital deformity of the foot in which the sole is permanently flexed so that walking is done on the toes without touching the heel to the ground                                      
                
                    
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  Merriam-Webster unabridged




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