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verb (used with object), spark·plugged, spark·plug·ging. Informal.
  1. to lead, inspire, or animate something or someone.

Origin of sparkplug

v. use of spark plug
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for sparkplug

Historical Examples

  • Burns picked up a sparkplug from the office desk as he spoke.

    Red Pepper Burns

    Grace S. Richmond