floor it

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floor it (third-person singular simple present floors it, present participle flooring it, simple past and past participle floored it)

1. (idiomatic, automobiles) To depress the accelerator to the maximum extent.
2. (idiomatic) To move (run, ride etc.) at full speed.

• (to depress the accelerator the maximum extent): put pedal to the metal, fang it (Australian), redline, step on it