Hypertext Webster Gateway: "Treadmill"
From Webster's Revised Unabridged Dictionary (1913) (web1913)
Treadmill \Tread"mill`\, n.
A mill worked by persons treading upon steps on the periphery
of a wide wheel having a horizontal axis. It is used
principally as a means of prison discipline. Also, a mill
worked by horses, dogs, etc., treading an endless belt.
From WordNet (r) 1.7 (wn)
treadmill
n 1: an exercise device consisting of an endless belt on which a
person can walk or jog without changing place
2: a mill that is powered by men or animals walking on a
circular belt or climbing steps [syn: {treadwheel}]
3: a job involving drudgery and confinement [syn: {salt mine}]
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