The object, a mammoth silver wheel whirling at terrific rate, shot past.

A silver wheel - the design mentioned by the women in Hyalt.

"You remember the traders with the silver wheel on their wagons?"

A silver wheel was turning where his head had been.

The stick moved, spun, became a silver wheel, and Patras looked down at where his sword hand had been.

The silver wheel spun toward Patras's neck, and through it.

It consists of a silver wheel with six spokes on a red background.

The arms show a silver wheel of a turbine in a hydroelectric power plant on a blue background.

Somehow he would find the silver wheel, the artifact that might explain the meaning of the strangers' coming.

And within that desert, I must find a great silver wheel.