(v): change location; move, travel, or proceed, also metaphorically
(v): tread or stomp heavily or roughly
(v): use one's feet to advance; advance by steps
(v): crush as if by treading on
(v): to compress with violence, out of natural shape or condition
(v): brace (an archer's bow) by pressing the foot against the center
(v): support by bracing
(v): apply (the tread) to a tire
(v): give or convey physically
(v): mate with
(v): engage in sexual intercourse
(n): a step in walking or running
(n): the act of changing location by raising the foot and setting it down
(n): the grooved surface of a pneumatic tire
(n): the outer boundary of an artifact or a material layer constituting or resembling such a boundary
(n): the part (as of a wheel or shoe) that makes contact with the ground
(n): (electronics) a junction where things (as two electrical conductors) touch or are in physical contact
(n): structural member consisting of the horizontal part of a stair or step
(n): support that is a constituent part of any structure or building
