"lever worked by foot," c. 1400, from Old English tredel "step, stair, sole of the foot," from tredan "to tread" (see tread (v.)) + instrumental suffix -el (1). Compare handle (n.).
the brick maker treadles over clay to pick out the stones
tray
treacherous
treachery
treacle
tread
treadle
treadmill
treason
treasonable
treasonous
treasure
