Main Entry:

tread·mill

Pronunciation:

\ˈtred-ˌmil\

Function:

noun

Date:

1822

1 a: a mill worked by persons treading on steps on the periphery of a wide wheel having a horizontal axis and used formerly in prison punishment b: a mill worked by an animal treading an endless belt c: a device having an endless belt on which an individual walks or runs in place for exercise or physiological testing2: a wearisome or monotonous routine resembling continued activity on a treadmill <the office treadmill>