Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “plug”

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?
Browse related topics

You are looking at an entry to do with Lids, covers and stoppers, but you might be interested in these topics from the Containers and vessels topic area:

Add Cambridge dictionaries to your browser to your website

Definitions of “plug” in other dictionaries

Word of the Day

give the green light to sth

to give permission for someone to do something or for something to happen

Word of the Day

Highly delighted, bitterly disappointed, ridiculously cheap: adverbs for emphasis.

by Liz Walter,
October 22, 2014
We often make adjectives stronger by putting an adverb in front of them. The most common ones are very and, for a stronger meaning, extremely: He was very pleased. The ship is extremely large. However, we don’t use very or extremely for adjectives that already have a strong meaning, for example fantastic,

Read More 

life tracking noun

October 20, 2014
the use of one or more devices or apps to monitor health, exercise, how time is spent, etc.

Read More