Sharpening

Your pencils need sharpening.

The new boy made up to his teacher by sharpening her pencils.

A cat was sharpening its claws against a post.

He was sharpening a knife.

Tom is sharpening a knife.

I am sharpening my sword.

Tom sat at the kitchen table, sharpening a knife.

Tom is pretty good at sharpening knives.

We're sharpening the knives.

If I had eight hours to chop down a tree, I'd spend the first six hours sharpening the ax.

There are flourishes and coloratura passages in this art, heightenings and sharpenings of the line that serve only to give the needy linear system a value of its own in confrontation with nature.