- the starting of an internal-combustion engine that has a discharged or weak battery by means of booster cables.
- to give a jump-start to: to jump-start an engine.
- to enliven or revive: to jump-start a sluggish economy.
- to start the engine of (a car) by connecting it to another engine with jump leads or (of a car) to start in this way
- the act of starting a car in this way
