Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “switch”

See all translations

switch

noun uk   /swɪtʃ/ us  

switch 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?switches [plural] US ( mainly UK points) a place on a railway track where the rails (= metal bars on which the trains travel) can be moved to allow a train to change from one track to another: The train rattled as it went over the switches.
More examples

switch noun (CHANGE)

[C] a sudden or complete change, especially of one person or thing for another

switch

verb [T, I usually + adv/prep] uk   /swɪtʃ/ us  

switch verb [T, I usually + adv/prep] (DEVICE)

B1 to use a switch to change a device from one state or type of operation to another: switch the TV off/on
More examples

switch verb [T, I usually + adv/prep] (CHANGE)

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).
More examples
(Definition of switch from the Cambridge Advanced Learners Dictionary & Thesaurus © Cambridge University Press)
What is the pronunciation of switch?
Add Cambridge dictionaries to your browser to your website

Definitions of “switch” in other dictionaries

Word of the Day

lamb

a young sheep, or the flesh of a young sheep eaten as meat

Word of the Day

The way we move (Verbs for walking and running)

by Kate Woodford,
March 25, 2015
​​​ This week we’re looking at interesting ways to describe the way that people move. Most of the verbs that we’ll be considering describe how fast or slow people move. Others describe the attitude or state of mind of the person walking or running. Some describe both. Starting with verbs for walking slowly,

Read More 

stackin’ p

March 30, 2015
idiom slang earning a lot of money ‘That’s a very generous present.”Yeah, well, she’s stackin’ p, innit?’

Read More