tread - noun

a step in walking or running

the grooved surface of a pneumatic tire

the part (as of a wheel or shoe) that makes contact with the ground

structural member consisting of the horizontal part of a stair or step

tread - verb

• put down or press the foot, place the foot
• tread or stomp heavily or roughly
• crush as if by treading on
• brace (an archer's bow) by pressing the foot against the center
• apply (the tread) to a tire
• mate with

tread - thesaurus

pace   step   stride   trample