tread

tread

1. the outer part of a tyre or wheel that makes contact with the road, esp the grooved surface of a pneumatic tyre

2. the part of a rail that wheels touch

3. Vet science an injury to a horse's foot caused by the opposite foot, or the foot of another horse

tread

1. The horizontal upper surface of a step; includes the rounded edge or nosing which extends over the riser.

See also: Step

2. The horizontal upper surface of a step; includes the rounded edge or nosing which extends over the riser.

tread

[tred]

(civil engineering)

The horizontal part of a step in a staircase.

The distance between two successive risers in a staircase.

(engineering)

The part of a wheel or tire that bears on the road or rail.

tread

The horizontal surface of a step; often has a rounded edge that extends beyond the upright face of the riser below it.