rowel

A sharp-toothed wheel inserted into the end of the shank of a spur.

To use the rowel on; put spurs to.

In farriery, to apply a rowel to.

To furnish with a rowel, as a spur.

. A small wheel, ring, or circle.

The wheel of a horseman’s spur, armed with pointed rays.

A roller on the mouthpiece of an old form of bit for horses.

In farriery, a seton inserted in the flesh of an animal.

The spiked wheel of some forms of soil-pulverizers and wheel-harrows.

The little wheel of a spur, with sharp points.