Definition of turn on
                                                                                                    
                                                                            (verb) 
                                                                                                                                                         cause to 
operate by flipping a switch; "switch on the light"; "turn on the stereo"
                                                                        
 
                                                                    
                                                                                                                 be 
contingent on; "The outcomes rides on the results of the election"; "Your 
grade will depends on your homework"
                                                                        
                                                                                                                 produce suddenly or automatically; "Turn on the charm"; "turn on the waterworks"
                                                                        
 
                                                                    
                                                                    
                                                                    
                                                                    
                                                                                                                 get high, stoned, or drugged; "He trips 
every weekend"