'Treadmill' definitions:

Definition of 'treadmill'

(from WordNet)
noun
An exercise device consisting of an endless belt on which a person can walk or jog without changing place
noun
A mill that is powered by men or animals walking on a circular belt or climbing steps [syn: treadmill, treadwheel, tread-wheel]
noun
A job involving drudgery and confinement [syn: treadmill, salt mine]

Definition of 'Treadmill'

From: GCIDE
  • 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. [1913 Webster]

Synonyms of 'treadmill'

From: Moby Thesaurus

Words containing 'Treadmill'