SPARKING PLUG Synonyms

• blockage consisting of an object designed to fill a hole tightly

• a wad of something chewable as tobacco

• blatant or sensational promotion

• electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark

• an electrical device with two or three pins that is inserted in a socket to make an electrical connection

• an upright hydrant for drawing water to use in fighting a fire

• an old or over-worked horse

• fill or close tightly with or as if with a plug

• persist in working hard

• deliver a quick blow to

• make a plug for; praise the qualities or in order to sell or promote

• replace the center of a coin with a baser metal

• insert a plug into

• insert as a plug