DICT.TW Dictionary Taiwan

 Pe·dal a.
 1. Of or pertaining to the foot, or to feet, literally or figuratively; specifically Zool., pertaining to the foot of a mollusk; as, the pedal ganglion.
 2. Of or pertaining to a pedal; having pedals.
 Pedal curve or Pedal surface Geom., the curve or surface which is the locus of the feet of perpendiculars let fall from a fixed point upon the straight lines tangent to a given curve, or upon the planes tangent to a given surface.
 Pedal note Mus., the note which is held or sustained through an organ point. See Organ point, under Organ.
 Pedal organ Mus., an organ which has pedals or a range of keys moved by the feet; that portion of a full organ which is played with the feet.