The scar on the abdomen that marks the site of attachment of the umbilical cord to the fetus. It is commonly called the navel.
            
            Umbilicus | 
    
| 
             | 
    
            
            Umbilicus | 
    
| 
             The scar on the abdomen that marks the site of attachment of the umbilical cord to the fetus. It is commonly called the navel.  | 
    
Online Medical Dictionary: Your essential reference to over 5000 medical terms.