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sparking plug

noun, British.
spark plug (def 1).
Origin of sparking plug
1900-05 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for sparking-plug
Historical Examples
  • I made sure that the oil was circulating, and cleaned the sparking-plug, but the trouble was not remedied.

    The Home of the Blizzard Douglas Mawson
British Dictionary definitions for sparking-plug

sparking plug

a device screwed into the cylinder head of an internal-combustion engine to ignite the explosive mixture by means of an electric spark which jumps across a gap between a point earthed to the body of the plug and the tip of a central insulated rod Also called spark plug
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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