1. (noun) plug, stopper, stopple
blockage consisting of an object designed to fill a hole tightly
2. (noun) chew, chaw, cud, quid, plug, wad
a wad of something chewable as tobacco
3. (noun) ballyhoo, hoopla, hype, plug
blatant or sensational promotion
4. (noun) spark plug, sparking plug, plug
electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark
5. (noun) plug, male plug
an electrical device with two or three pins that is inserted in a socket to make an electrical connection
6. (noun) fireplug, fire hydrant, plug
an upright hydrant for drawing water to use in fighting a fire
7. (verb) hack, jade, nag, plug
an old or over-worked horse
8. (verb) plug, stop up, secure
fill or close tightly with or as if with a plug
"plug the hole"; "stop up the leak"
9. (verb) plug, plug away
persist in working hard
"Students must plug away at this problem"
10. (verb) punch, plug
deliver a quick blow to
"he punched me in the stomach"
11. (verb) plug
make a plug for; praise the qualities or in order to sell or promote
12. (verb) plug
insert a plug into
"plug the wall"
13. (verb) plug
insert as a plug
"She plugged a cork in the wine bottle"
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Definition of 'plug' 
