Bible Dictionaries
Treadmill

Webster's Dictionary

(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.

Bibliography Information
Webster, Noah. Entry for 'Treadmill'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​t/treadmill.html. 1828.