Of or pertaining to the foot, or to feet, literally or figuratively; specifically (Zoöl.), pertaining to the foot of a mollusk; as, the pedal ganglion.
source: Webster 1913
noun
a sustained bass note
source: WordNet 3.0
a lever that is operated with the foot
source: WordNet 3.0
A lever or key acted on by the foot, as in the pianoforte to raise the dampers, or in the organ to open and close certain pipes; a treadle, as in a lathe or a bicycle.