Electrical device that fits into the cylinder head of an internal-combustion engine and ignites the gas by means of an electric spark.
1The chauffeur will have to go on by diligence to-morrow to get a new sparking plug.
2Will come without fail to-night and bring new sparking plugs.
3Then he took out each of the six sparking plugs and filled the cylinders with oil, and screwed the plugs back finger tight.
Translations for sparking plug