To beat or press with the feet; as, to tread a path; to tread land when too light; a well- trodden path
If you tread a particular path, you take a particular course of action or do something in a particular way. He continues to tread an unconventional path
The region of a tire designed to contact the ground It is molded of tough rubber for high traction and low wear
structural member consisting of the horizontal part of a stair or step the part (as of a wheel or shoe) that makes contact with the ground the grooved surface of a pneumatic tire brace (an archer's bow) by pressing the foot against the center mate with; "male birds tread the females"