|Origin:||Middle Dutch plugge|
plug1 S3 [countable]
a small object at the end of a wire that is used for connecting a piece of electrical equipment to the main supply of electricity:
The plug on my iron needs changing.
b) informal especially British EnglishTEED
a place on a wall where electrical equipment can be connected to the main electricity supply [= socket; = outlet AmE]
a round flat piece of rubber used for stopping the water flowing out of a bath or sink:
the bath plug
a way of advertising a book, film etc by mentioning it publicly, especially on television or radio
put/get in a plug (for something)
During the show she managed to put in a plug for her new book.
the part of a petrol engine that makes a spark, which makes the petrol start burning [= spark plug]:
in an engineinformalTTC
Change the plugs every 10,000 miles.
to prevent a plan, business etc from being able to continue, especially by deciding not to give it any more money:
The Swiss entrepreneur has pulled the plug on any further investment in the firm.
an object or substance that is used to fill or block a hole, tube etc
to fill a hole
plug of➔ earplug
You can fill any holes with plugs of matching wood.
a small plastic tube put in a hole to hold a screw tightly
for holding screwsDHTB British English
a piece of something pressed tightly together:
a piece of something
a plug of tobacco