Meaning: to stop a machine or an appliance from working by using a button or a switchSynonym: switch off
- turn off sth Don't forget to turn off the air conditioner before you leave the house. We shouldn't be wasting energy.
- turn sth off Do you turn all your lights off at night, or do you leave some of them on?
turn off: light, computer, phone, television, heater, air conditioner, engine, motor
We should turn off all our appliances when we aren't using them in order to