From Longman Dictionary of Contemporary Englishturn on phrasal verb1turn something ↔ onSWITCH ON OR OFF to make a machine or piece of electricalequipment such as a television, engine, light etc start operating by pushing a button, turning a key etc syn switch on opp turn offJake turned on his computer and checked his mail.2turn something ↔ onSWITCH ON OR OFF to make the supply of water, gas etc start flowing from something by turning a handle opp turn offHe turned on the gas and lit the stove.‘I’m thirsty, ’ she said, turning on the tap.3turn on somebody also turn upon somebodyATTACK to suddenly attack someone, using physicalviolence or unpleasant wordsPeter turned on Rae and screamed, ‘Get out of my sight!’4turn on something also turn upon somethingDEPEND/IT DEPENDS if a situation, event, argument etc turns on a particular thing or idea, it depends on that thingAs usual, everything turned on how much money was available.5turn somebody onATTRACT to make someone feel sexually excitedThe way he looked at her really turned her on. →turn-on6turn somebody onINTERESTED to interest someone, or to make someone become interested in somethingScience fiction just doesn’t turn me on.turn somebody on toIt was Walter who turned me on to vegetarian food.7turn on the charm also turn it on to suddenly start to be very nice, amusing, and interesting, especially in a way that is not sincereSimon was good at turning on the charm at parties. →turn→ See Verb table
Examples from the Corpus
turn on• Do you want me to turn the lights on?• Then the warriors turned upon each other, for a fight to the death.• Red with rage, Frankturned on Anna, grasping her arm in a vice-likegrip.• Use timers to turn onindoor lights while you are away.• He went into the bathroom and turned on the shower.turn somebody on• It's difficult telling your partner what actually turns you on.• Men with long hair really turn me on.• My last boyfriend always found nurses' uniforms a realturn-on.turn to• Tom turned the radio on to a station that played dancemusic.• I turned him on to it.• The other thing that turned me on to television was immediacy.• As Amin turned out on to the main road, there were two explosions, in quicksuccession.• The squeeze is, in turn, passed on to the next person.• Half closing my eyes, I turned and backed on to the porch.• And maybe for the first time in our lives, we turned that fury on to the world, away from ourselves.• Mr Cargill, he really turned me on to this stuff.turn on the charm• Wayne certainly knows how to turn on the charm when he wants something out of you.turn-onˈturn-on noun [singular]informalSEXY something that makes you feel excited, especially sexuallyIt was a turn-on to be the centre of attention. →turn on
Examples from the Corpus
turn-on• I found this such a turn-on that I nearly came then and there.• Who knows, it may even work as a kind of sickturn-on.• Her voice is a totalturn-on.