'Treadle' definitions:

Definition of 'treadle'

From: WordNet
noun
A lever that is operated with the foot [syn: pedal, treadle, foot pedal, foot lever]
verb
Tread over; "the brick maker treadles over clay to pick out the stones"
verb
Operate (machinery) by a treadle

Definition of 'Treadle'

From: GCIDE
  • Treadle \Trea"dle\, n. [OE. tredyl a step, AS. tredel. See Tread.]
  • 1. The part of a foot lathe, or other machine, which is pressed or moved by the foot. [1913 Webster]
  • 2. (Biol.) The chalaza of a bird's egg; the tread. [1913 Webster]