(transitive) to press, push / (transitive) to rest / (transitive) to support, to back / (reflexive) to lean [+ sur (object) = on] or [+ contre (object) = against] / (reflexive) to depend, to rely [+ sur (object) = on] / (reflexive) to put up with

(informal) to step on it, to floor it, to put the pedal to the metal, to put one's foot down, to step on the gas