Switch/swɪtʃ/ Definition 1 of 5Pro Tip 1/3Physical Action Often involves pushing, flipping or turning the switch to operate. Flip the switch upwards to turn on the lights. Pro Tip 2/3Immediate Effect The action of switching usually results in an instant response. When you hit the switch, the machine starts. Pro Tip 3/3Common Locations Switches are often found on walls for lights or on devices for operation. The emergency switch is located by the door.