: an exercise machine which has a large belt that moves around while a person walks or runs on it
: a boring or tiring activity, job, etc., in which you repeatedly do the same things
What made you want to look up treadmill? Please tell us where you read or heard it (including the quote, if possible).
Take our visual vocab quiz
A quick quiz about stuff worth knowing
The commonly misspelled words quiz
The Vocab Quiz Game for iPhone & iPad
"Incredibly fun and addictive. And informative!" User Review, iTunes