a. a curved metal plate forming part of the metal rim on a wooden wheel
b. any metal plate let into a rubber tyre
2.
nautical Also called: streak one of a continuous range of planks or plates forming the side of a vessel
3.
a profiled piece of wood carried on an arm that rotates round a fixed post: used to sweep the internal shape of a mould, as for a bell or a ship's propeller blade, in sand or loam