Keywords: earthquake, tremor
Sign Definition
As a Noun
                                            1.  A shaking of the ground caused by movement of the earth's crust. English = earthquake.
                                          
                                          
                                        
                                            2.  A small earthquake. English = tremor.
                                          
                                          
                                        As a Verb or Adjective
                                            1.  Of the ground, to shake because of movement of the earth's crust.
                                          
                                          
                                         
                  
                      