definition of
turn on

[1] #1 turn on v. cause to operate by flipping a switch; "switch on the light"; "turn on the stereo". wn

[2] #2 turn on v. be contingent on; "The outcomes rides on the results of the election"; "Your grade will depends on your homework". wn

[3] #3 turn on v. produce suddenly or automatically; "Turn on the charm"; "turn on the waterworks". wn

[4] #4 turn on v. become hostile towards; "The dog suddenly turned on the mailman". wn

[5] #5 turn on v. cause to be agitated, excited, or roused; "The speaker charged up the crowd with his inflammatory remarks". wn