jump-start (Noun) — Starting an automobile engine that has a weak battery by means of jumper cables to another car. ex. "my battery was dead so I had to get a jump-start from my neighbour"
jump-start (Verb) — Start (a car engine whose battery is dead) by connecting it to another car's battery.
jump-start (Verb) — Start or re-start vigorously. ex. "The Secretary of State intends to jump-start the Middle East Peace Process"