S: (n) brake pedal (foot pedal that moves a piston in the master brake cylinder)
S: (n) clutch, clutch pedal (a pedal or lever that engages or disengages a rotating shaft and a driving mechanism) "he smoothely released the clutch with one foot and stepped on the gas with the other"
S: (n) soft pedal (a pedal on a piano that moves the action closer to the strings and so soften the sound)
S: (n) sustaining pedal, loud pedal (a pedal on a piano that lifts the dampers from the strings and so allows them to continue vibrating)