| Noun | 1.jumpstart - 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"jump-startaction - something done (usually as opposed to something said); "there were stories of murders and other unnatural actions" | Verb | 1.jumpstart - start (a car engine whose battery is dead) by connecting it to another car's batteryjump-start, jumpstart up, start - get going or set in motion; "We simply could not start the engine"; "start up the computer" | | 2.jumpstart - start or re-start vigorously; "The Secretary of State intends to jumpstart the Middle East Peace Process"jump-startcommence, lead off, start, begin - set in motion, cause to start; "The U.S. started a war in the Middle East"; "The Iraqis began hostilities"; "begin a new chapter in your life" |