📒 a flat bar on a machine such as a bicycle, car, etc. that you push down with your foot in order to make parts of the machine move or work
📒 a bar on a musical instrument such as a piano or an organ that you push with your foot in order to control the sound
📒 (to go) at full speed; (to drive) with the accelerator of the car pressed to the floor
📒 to use as much effort as possible; with as much effort as possible