—switch /swɪtʃ/
noun (DEVICE)
B1 [C] a small device, usually pushed up or down with your finger, that controls and turns on or off an electric current:
» a light switch» Can you flip the switch?See picture: switch 
Thesaurus+: ↑Electrical switches and connectionsswitches [plural]
F0 US FOR POINTS(Cf. ↑points)
Thesaurus+: ↑Electrical switches and connections• • •
Extra Examples:» You turn the television on by flipping the switch at the side.» Mysteriously, the light came on, although no one was near the switch.» An additional power switch for the radio is handily located next to the steering wheel.» She flicked the on-off switch.» All these machines operate at the flick of a switch.noun [C] (CHANGE)
► F0 a sudden or complete change, especially of one person or thing for anotherThesaurus+: ↑Change and changesverb [T, I usually + adv/prep] (CHANGE) ↑Verb Endings for switch
► B2 to change suddenly or completely, especially from one thing to another, or to exchange by replacing one person or thing with another: » She started studying English at college, but switched to Business Studies in her second year.» In 1971, Britain switched over (= changed completely) to a decimal currency.» After the bank robbery, the gang switched cars (= left one car and got into another).Thesaurus+: ↑Changing , ↑Adapting and modifying , ↑Adapting and attuning to something , ↑Changing frequently• • •
Extra Examples:» The robbers switched the painting for a fake.» We used to have oil-fired central heating, but now we've switched to gas.» Many European countries have now switched over to the Euro.» He's decided to switch the meeting from Monday to Thursday.» Will you switch shifts with me on Friday?verb [T, I usually + adv/prep] (DEVICE) ↑Verb Endings for switch
► B1 to use a switch to change a device from one state or type of operation to another: » switch the TV off/onThesaurus+: ↑Electricity and electronics• • •
Extra Examples:» Are you positive that you saw me switch the iron off?» By toggling this key, you can switch the italics on and off.» Could you switch on the radio?» She switched to another channel to watch the football.» The computer takes a few seconds to power up after it's been switched on.- on-trend
- on/under pain of death
- on view
- onward
- onward and upward
- onwards
- on welfare
- on wheels
- on your bike!
- on your last legs
- on your marks, get set, go!
- on your merits
- on your mettle
- on your own
- on your own head be it
- on your own initiative
- on your (own) merits
- on your own merits
- on your rounds
- on your tod
- on your toes
- onyx
- O, o
- oodles
- ooh