tread

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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.
References in periodicals archive ?
Perfectionists might not be impressed, but I take heart from the advice of the Light Treaders, who say it's perfectly acceptable to start where you are and do the best you can.
Reppe, a founding member of Light Treaders, already was on board the sustainable-living train, having given up his car for a bike.
The Light Treaders aren't the only people taking such measures in Lane County.
And that's exactly what Light Treaders plans to do.
For those who want to duplicate Light Treaders' efforts, the group recommends staying upbeat and constructive, committing to a regular meeting time and sticking with it, yet keeping the experience sociable with snacks and libations.