- 1jump-start something to start the engine of a car by connecting the battery to the battery of another car with jumper cables
- 2jump-start something to put a lot of energy into starting a process or an activity or into making it start more quickly
jump-start
verb(also jump)Verb Forms present simple I / you / we / they jump-start
he / she / it jump-starts
past simple jump-started
-ing form jump-starting
Check pronunciation: jump-start