Plug (connector) definition

(1) An old or over-worked horse

(2) An upright hydrant for drawing water to use in fighting a fire

(3) Blockage consisting of an object designed to fill a hole tightly

(4) An electrical device with two or three pins that is inserted in a socket to make an electrical connection

(5) Electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark

(6) Blatant or sensational promotion

(7) A wad of something chewable as tobacco

(8) Persist in working hard

"Students must plug away at this problem"

(9) Make a plug for; praise the qualities or in order to sell or promote

(10) Deliver a quick blow to

"He punched me in the stomach"

(11) Fill or close tightly with or as if with a plug

"Plug the hole"

"Stop up the leak"