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switch

1 switch /ˈswɪtʃ/ noun
plural switches
1 switch
/ˈswɪtʃ/
noun
plural switches
Britannica Dictionary definition of SWITCH
[count]
: a small device that starts or stops the flow of electricity to something (such as a lamp or a machine) when it is pressed or moved up and down
see also dip switch, toggle switch
: a sudden change from one thing to another usually singular
see also bait and switch
US : a device for moving the rails of a track so that a train may be turned from one track to another
: a thin stick that can be easily bent
2 switch /ˈswɪtʃ/ verb
switches; switched; switching
2 switch
/ˈswɪtʃ/
verb
switches; switched; switching
Britannica Dictionary definition of SWITCH
: to make a change from one thing to another : to start doing or using something that is different
[no object]
[+ object]
: to make a change from one thing to another by turning or pushing a button or moving a switch, lever, etc.
[no object]
[+ object]
[+ object] : to change or replace (something) with another thing

switch gears

see 1gear

switch off

[phrasal verb]
switch (something) off or switch off (something) : to turn off (something) by turning or pushing a button or moving a switch, lever, etc.
informal : to stop paying attention

switch on

[phrasal verb]
switch (something) on or switch on (something)
: to turn on (something) by turning or pushing a button or moving a switch, lever, etc.