a floor
To hit the acceleration pedal (or, in the US, gas pedal) to such extremities that it is parallel to the floor of a car. i.e. Hit maximum speed as quickly as physically possible.
Synonyms for floor it
On this page, you will find 30 slang terms related to a floor. Some of the top words include: Hoon it, hauling ass, gussin, Explode, KriZ, and 25 more.