Hypertext Webster Gateway: "treadwheel"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Treadwheel \Tread"wheel`\, n.
A wheel turned by persons or animals, by treading, climbing,
or pushing with the feet, upon its periphery or face. See
{Treadmill}.
From WordNet (r) 1.7 (wn)
treadwheel
n : a mill that is powered by men or animals walking on a
circular belt or climbing steps [syn: {treadmill}]
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