The past tense of 'sparkplug', which means to be the driving force behind something or to promote or stimulate its growth or progress.
It's a positive word that means to help something grow or move forward.
Examples:
She sparkplugged the charity event and it was a big success.
The teacher sparkplugged the students' interest in science.
He sparkplugged the team to victory.
The little girl sparkplugged the lemonade stand and made lots of money.
The new manager sparkplugged the company's growth and it became very successful.
The mayor sparkplugged the new park and now it's a great place to play.