Definition of “plug (sth) in/plug (sth) into sth” - English Dictionary

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“plug (sth) in/plug (sth) into sth” in British English

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plug (sth) in/plug (sth) into sth

phrasal verb with plug uk /plʌɡ/ us /plʌɡ/ verb [ T ] -gg-

B2 to connect an electrical device to an electrical system or device so that it can be used, by pushing its plug into a socket:

Of course the radio isn't working - you haven't plugged it in!
I want to plug the kettle into the right-hand socket.
Can you show me where the microphone plugs into the tape recorder?
The keyboard plugs in at the back of the computer.

(Definition of “plug (sth) in/plug (sth) into sth” from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)