plug in

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plug in (third-person singular simple present plugs in, present participle plugging in, simple past and past participle plugged in)

1. (idiomatic) To connect (an electrical device) to a plug socket.

   Antonym: unplug

   • 2006 Feb. 17, Graham Linehan, The IT Crowd, Season 1, Episode 4:

     Hello, IT. Have you tried turning it off and turning it on again? Ok. Well, are you sure that it's plugged in?

   • 2020 December 2, Paul Bigland, “My weirdest and wackiest Rover yet”, in Rail, page 65:

     I eschew the idea of plugging in my laptop to take notes and resort to old-fashioned pen and paper instead, so that I can enjoy more of the view and not be distracted by bashing a keyboard.

2. (idiomatic) To familiarize and integrate (a person) into an organization.
   • 1994 September 22, 'Clinical Evidence' - Fraudulent Medicare Claims in FL (television production), Chris Wallace (actor), ABC:

     The drivers routinely patrol these areas- welfare offices, senior centers, even street corners- asking the Medicare patients to come with them for check-ups in return for cash. […] To get plugged in, we enlisted Lizzie Green, a 75-year-old widow who lives on social security and a small pension. She agreed to be our undercover test patient.

   • 2017 July 15, Dan Barnes, “Dan Barnes: Eskimos survive late scare to remain only unbeaten CFL team”, in Edmonton Journal‎^[1]:

     The Eskimos’ [football team] organizational depth has been tested early and often by a persistent injury bug that has claimed three starters […] and they continue to plug in new players and carry on.

   • c. 2017, Jay Moneta Hunter Thomson, “Membership”, in Wyatt Elementary PTA‎^[2]:

     Research shows that children whose parents are involved in their school make better grades and have fewer disciplinary problems at school. When parents get plugged in at school, their children do better.

3. (idiomatic, mathematics) To replace a variable with a number in order to solve an equation.

   Synonym: substitute

   If an equation has three unknowns, you can plug in two of them to find the third.

4. (idiomatic) To input or enter (data).
   • 2005 July, Dan Tynan, “30 Things You Didn't Know You Could Do on the Internet”, in PC World, volume 23, number 7, page 76:

     Want to find out what the bloggers are talking about before it hits the mainstream? Just sign up for PubSub […] and plug in your search terms. This site crawls more than 9 million blogs, public relations newswires, and SEC filings for relevant entries, and then e-mails you the results.

5. To become involved in something.
   • 1983 December 24, Cindy Patton, “AIDS: Putting the Pieces Together”, in Gay Community News, volume 11, number 23, page 3:

     The inability of the gay movement as a whole to interrelate AIDS work with the many other items on its political agenda left vast segments of the lesbian and gay community sitting on the sidelines wondering how and why to plug in.

• plug into

• Pinglu, gulpin, puling