Definition of "Tread" :

noun: a step in walking or running

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

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

noun: the grooved surface of a pneumatic tire

verb: brace (an archer's bow) by pressing the foot against the center

verb: mate with

"Male birds tread the females."

verb: crush as if by treading on

"Tread grapes to make wine."

verb: tread or stomp heavily or roughly

verb: put down or press the foot, place the foot

"For fools rush in where angels fear to tread."

verb: apply (the tread) to a tire