whetstone

The Villiers motto, Fidei coticula crux, The cross is the whetstone of faith, is inscribed on the frieze.

It is uncertain what the Naxian whetstone was, but it was considered the best variety of whetstone.

The soldier was then on his way home, and when he got there the first thing he did was to look for the whetstone.

If Whetstone had run swiftly in the first race, he fairly whistled through the air like a wild duck in the second.