hone

HONE, n. A stone of a fine grit, used for sharpening instruments that require a fine edge, and particularly for setting razors. [We never, I believe, call a hone, a whet-stone. The latter is a stone of coarse grit. See the word.]

HONE, v.t. To rub and sharpen on a bone; as, to hone a razor.

HONE, v.i. To pine; to long.