rowel

The rowel is one and a half or two inches in diameter, and the points are about twenty-five or thirty inches long.

The spurs were also richly gilded, the shank and rowel representing the thistle, and were the gift of the drummer-boys.

In an abandon he leaned far forward over his saddle, the rowel of his spur dug viciously into his horse's flank.

At the heel of one of his moccasins was buckled a huge iron spur, with a rowel five or six inches in diameter.

But he sprang to the right, when the rowel went into his flank, carrying with it the assurance that the game was up.