treadwheel

== English == === Alternative forms === tread-wheel, tread wheel === Etymology === From tread +‎ wheel. === Noun === treadwheel (plural treadwheels) A large wheel turned by treading, climbing, or pushing with the feet upon its periphery, as for example in a treadmill. ==== Synonyms ==== walking wheel === References === “treadwheel”, in Webster’s Revised Unabridged Dictionary, Springfield, Mass.: G. & C. Merriam, 1913, →OCLC.