Did you know?

Click any word in a definition or example to find the entry for that word

plug - definition and synonyms

What are red words?

90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.

Thesaurus diagram

The thesaurus of synonyms and related words is fully integrated into the dictionary. Click on the thesaurus category heading under the button in an entry to see the synonyms and related words for that meaning.

noun [countable]     plug pronunciation in British English
Word Forms
  1. 2
    an attempt to make people interested in a book, film etc by talking about it in an enthusiastic way, especially on a radio or television programme
    get/put in a plug for something:

    Guests are given the chance to put in a plug for their latest book.

  2. 3
    a small round plastic or rubber object used for preventing water from flowing out of the hole in a sink or bath
    1. a.
      a small piece of plastic, wood, rubber etc used for filling a hole so that nothing can get through it
    2. b.
      a small piece of something such as cotton wool that you put in your ear or use for stopping blood from flowing from your nose or a cut etc
    3. c.
      a small plastic tube that you put in a hole in a wall before you put a screw into it
  3. 5
    a small piece of tobacco that you keep in your mouth and chew
  4. From our crowdsourced Open Dictionary
    a work horse

    He's riding an old plug.

    Submitted by Vicki Jenssen from Canada on 20/02/2012
  • Facebook
  • Twitter


to manipulate someone psychologically so that they begin to question their own perceptions and memories

BuzzWord Article

Open Dictionary

Dunning-Kruger effect

the phenomenon by which an incompetent person is too incompetent to understand his own incompetence

add a word


A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.

global English and language change from our blog
Macmillan learn live love play