Sparkplug

Pronunciation: /ˈspɑɹkˈpɫəɡ/

Sparkplug (noun)

  1. A small part in a petrol engine that creates an electric spark to start burning the fuel.
  2. A person or thing that starts an activity or makes a plan begin successfully.

Examples

  • The sparkplug creates a spark to ignite the fuel.
  • A faulty sparkplug can make the engine run poorly.