Starting an automobile engine that has a weak battery by means of jumper cables to another car:
— My battery was dead so I had to get a jumpstart from my neighbor.

synonym: jump-start.

Start (a car engine whose battery is dead) by connecting it to another car's battery.

synonyms: jump, jump-start.

Start or re-start vigorously:
— The Secretary of State intends to jumpstart the Middle East Peace Process.

synonym: jump-start.