nutshell
noun
                                                                                                                            
                                                            nut·shell
                    
                                                                                                              
                                                                                                                                  ˈnət-ˌshel  
                                                      
                                                          
            1
                    
                                          
              
          
                                                      : the hard external covering in which the kernel of a nut is enclosed                                      
                
                    
2
                    
                                          
              
          
                                                      : something of small size, amount, or scope                                      
                
                    
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  Merriam-Webster unabridged




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