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Entry 4 senses · 2 variants Webster, 1913

Pedal

/(pē"dal in def 1; 277)/ · Pe·dal · IPA /ˈpɛdəl/
01 a. Of or pertaining to the foot, or to feet, literally or figuratively; specifically (Zool.), pertaining to the foot of a mollusk; as, the ped…
  1. 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.(Zool.)
  2. 2.
    Of or pertaining to a pedal; having pedals.
Phrases & compounds
Pedal curve — 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 — the note which is held or sustained through an organ point. See Organ point, under Organ.
Pedal organ — 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.
02 n. 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,…
  1. 1.
    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.(Mech.)
  2. 2.
    A pedal curve or surface.(Geom.)