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English definition of “control key”

control key

noun [S] (also Ctrl key)     (also control [U])
IT a key on a computer keyboard , usually with ‘ Ctrlprinted on it, which you press with other keys to make the computer do a particular thing: Shortcut keys generally use the Ctrl key and a letter , such as Ctrl+C to copy .
(Definition of control key noun from the Cambridge Business English Dictionary © Cambridge University Press)
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