We don't have synonyms for tredmill yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are treadmill, redhill and tredwell.
°A piece of indoor sporting equipment used to allow for the motions of running or walking while staying in one place.
°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.
°A piece of indoor sporting equipment used to allow for the motions of running or walking while staying in one place.
°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.