accelerator

Short definition from Wiktionary

Noun

1. 1
   One who, or that which, accelerates.
2. 2
   A device for causing acceleration.
3. 3
   A substance which speeds up chemical reactions.
4. 4
   A pedal causing the vehicle to accelerate when it is pressed.
5. 5
   A chemical that reduces development time.
6. 6
   A device that accelerates charged subatomic particles; a particle accelerator.
7. 7
   A muscle or nerve that speeds the performance of an action.
8. 8
   An accelerator key.
9. 9
   A computer component using dedicated hardware to accelerate the processing and display of graphics.
10. 10
    A light van to take mails between a post office and a railway station.
11. 11
    A mentoring program for startup companies.