hyoid bone
noun
            variants  
 or less commonly hyoid
        
    
            
               plural hyoid bones also hyoids            
        
    
                                
              
          
                                                      : a U-shaped bone or complex of bones that is situated between the base of the tongue and the larynx and that supports the tongue, the larynx, and their muscles                                      
                
                    
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  Merriam-Webster unabridged




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