Definition of plug
(Entry 1 of 2)
1a : a piece used to fill a hole : stopper
b : an obtruding or obstructing mass of material resembling a stopper
2 : a flat compressed cake of tobacco
3 : a small core or segment removed from a larger object
4 : something inferior especially : an inferior often aged or unsound horse
b : spark plug
6 : an artificial fishing lure used primarily for casting and made with one or more sets of gang hooks
7 : any of various devices resembling or functioning like a plug: such as
a : a male fitting for making an electrical connection to a live circuit by insertion in a receptacle (such as an outlet)
b : a device for connecting electric wires to a jack
8 : a piece of favorable publicity or a favorable mention usually incorporated in general matter
plug
verbplugged; plugging
Definition of plug (Entry 2 of 2)
1a : to stop, make tight, or secure by inserting a plug
b : to remedy (a deficiency) as if by inserting a plug
trying to plug the gaps in their understanding
2 : to hit with a bullet : shoot
3 : to advertise or publicize insistently
1 : to become plugged —usually used with up
2 : to work doggedly and persistently
plugged away at her homework
3 : to fire shots
plug into
1 : to connect or become connected to by or as if by means of a plug
the city was plugged into the new highway system
2 : to load into as if by means of a plug
plugged the data into a computer
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Time Traveler for plug
The first known use of plug was in 1606
See more words from the same year