Learn how to say Treadmills correctly in English with this tutorial pronunciation video.
Oxford dictionary definition of the word treadmill:
a large wheel turned by the weight of people or animals treading on steps fitted into its inner surface, formerly used to drive machinery.
a device used for exercise, consisting of a continuous moving belt on which to walk or run.
a job or situation that is tiring or boring and from which it is hard to escape:
the soulless treadmill of urban existence