fingerpost
noun
                                                                                                                            
                                                            fin·ger·post
                    
                                                                                                              
                                                                                                                                  ˈfiŋ-gər-ˌpōst  
                                                      
                                                          
            1
                    
                                          
              
          
                                                      : a post bearing one or more signs often terminating in a pointing finger                                      
                
                    
2
                    
                                          
              
          
                                                      : something serving as a guide to understanding or knowledge                                      
                
                    
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  Merriam-Webster unabridged




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