DICT.TW Dictionary Taiwan

 trea·dle /ˈtrɛdḷ/
 踏木,踏板(vi.)踏動踏板,開動

 Trea·dle n.
 1. The part of a foot lathe, or other machine, which is pressed or moved by the foot.
 2. Biol. The chalaza of a bird's egg; the tread.
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 treadle
      n : a lever that is operated with the foot [syn: pedal, foot
          pedal, foot lever]
      v 1: tread over; "the brickmaker treadles over clay to pick out
           the stones"
      2: operate (machinery) by a treadle