plug

(noun) blockage consisting of an object designed to fill a hole tightly. Synonyms: stopper, stopple.

(noun) a wad of something chewable as tobacco. Synonyms: chew, chaw, cud, quid, wad.

(noun) blatant or sensational promotion. Synonyms: ballyhoo, hoopla, hype.

(noun) electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark. Synonyms: spark plug, sparking plug.

(noun) an electrical device with two or three pins that is inserted in a socket to make an electrical connection. Synonyms: male plug.

(noun) an upright hydrant for drawing water to use in fighting a fire. Synonyms: fireplug, fire hydrant.

(noun) an old or over-worked horse. Synonyms: hack, jade, nag.

(verb) fill or close tightly with or as if with a plug. Synonyms: stop up, secure. Examples: "Plug the hole." "Stop up the leak."

(verb) persist in working hard. Synonyms: plug away. Examples: "Students must plug away at this problem."

(verb) deliver a quick blow to. Synonyms: punch. Examples: "He punched me in the stomach."

(verb) make a plug for; praise the qualities or in order to sell or promote.

(verb) insert a plug into. Examples: "Plug the wall."

(verb) insert as a plug. Examples: "She plugged a cork in the wine bottle."