Definition of grave
                                                                                                    
                                                                    
                                                                    
                                                                                                                 of 
great gravity or 
crucial import; requiring 
serious thought; "grave responsibilities"; "faced a 
grave decision in a 
time of crisis"; "a grievous fault"; "heavy matters of state"; "the weighty matters to be discussed at the 
peace conference"
                                                                        
 
                                                                    
                                                                    
                                                                    
                                                                    
                                                                    
                                                                                                                 carve, cut, or 
etch into a 
material or surface; "engrave a pen"; "engraved the 
trophy cup with the winner's name"; "the lovers scratched their 
names into the 
bark of the tree"