noun. 
                    The person who has charge of the opening and shutting of a gate.
                  
                
                  
                    noun. 
                    The porter who attends to the gate at the entrance to a mansion, institution, etc.
                  
                
                  
                    noun. 
                    The person in charge of a gate at a level crossing on a railroad.
                  
                
                  
                    noun. 
                    The lessee or collector at a toll-gate.