acoine
noun
                                                                                                                            
                                                            ac·o·ine
                    
                                                                                                              
                                                                                                                                  ˈak-ə-ˌwēn 
                                                                                                                                  -wən 
                                                      
                                                          
            
                                
              
          
                                                      : a white crystalline derivative C23H26ClN3O3 of guanidine used as a local anesthetic                                      
                
                    
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  Merriam-Webster unabridged




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