Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “plug”

See all translations

plug

noun [C]  /plʌɡ/ us  

plug noun [C] (ELECTRICAL DEVICE)

a small plastic or rubber device with metal pins that connects the end of a wire on a piece of electrical equipment to a supply of electricity A plug is also a spark plug

plug noun [C] (HOLE BLOCK)

a small piece of esp. rubber or plastic that fits into a hole in order to block it: I was trying to fill the bathtub, but Matthew kept pulling out the plug.

plug noun [C] (ADVERTISE)

an advertisement for something by someone talking about it or praising it, esp. on television or radio: He took the opportunity to put in a plug for his new book.

plug

verb  /plʌɡ/ (-gg-) us  

plug verb (ADVERTISE)

[T] to advertise something by talking about it or praising it, esp. on television or radio

plug verb (USE ELECTRICAL DEVICE)

[I/T] to attach electrical equipment to a supply of electricity with a plug : [M] All you have to do is plug in the computer. [T] I’d like to plug the stereo into that outlet. [I] These systems plug into TV sets and run games.

plug verb (HOLE BLOCK)

[T] to prevent water or other liquid from coming through a hole by covering the hole: Workers finished plugging the hole in the dam.
Phrasal verbs
(Definition of plug from the Cambridge Academic Content Dictionary © Cambridge University Press)
What is the pronunciation of plug?
Add Cambridge dictionaries to your browser to your website

Definitions of “plug” in other dictionaries

Word of the Day

be as cold as ice

to be extremely cold

Word of the Day

Let’s celebrate! (words and phrases for parties)

by Kate Woodford,
December 17, 2014
​​​ With Christmas and New Year almost upon us, we thought it a good time to look at the language of parties and celebrations. First, let’s start with the word ‘party’ itself. To have or throw a party or, less commonly, to give a party is to arrange a party: We’re having a

Read More 

cinderella surgery noun

December 15, 2014
cosmetic surgery to the feet We have all heard of people having nose jobs, boob jobs and liposuction – but now a new trend growing in popularity in America: Cinderella surgery.

Read More