society > travel > means of travel > a conveyance > vehicle > vehicles according to means of motion > vehicle moving on wheels > [noun] > parts of vehicle moving on wheels > wheel > rim > tread (3)
The outer surface or tread of the rim of a wheel. Cf. tread, n. 7b. Obsolete (Scottish in later use).
Various technical senses. A wheel track, a rut (dialect); the transverse distance between the two wheels of a cart or other vehicle; also, the width…
The tread of a wheel (tread, n. 7b). dialect.