adjective. 
                    Of or pertaining to an electrical conductor which is connected to earth; earthed.
                  
                
                  
                    adjective. 
                    Not allowed to fly.
                  
                
                  
                    adjective. 
                    Confined to one's room, typically by a parent, as a punishment.
                  
                
                  
                    adjective. 
                    Mature, sensible with well-considered priorities.
                  
                
                  
                    verb. 
                    Simple past tense and past participle of ground.