from The American Heritage® Dictionary of the English Language, 4th Edition
- n. A hard, fine-grained stone for honing tools. Also called snakestone.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- n. A hard stone or piece of synthetically bonded hard minerals that has been formed with at least one flat surface, used to sharpen or hone an edged tool.
- n. A benchmark for evaluating the power of a computer.
from the GNU version of the Collaborative International Dictionary of English
- n. A piece of stone, natural or artificial, used for whetting, or sharpening, edge tools.
from The Century Dictionary and Cyclopedia
- n. A stone for sharpening cutlery or tools by friction. Whetstones are made of various kinds of stone, the finer kinds being, a silicious slate, and when used are moistened with oil or water.
- n. Figuratively, that which sharpens, stimulates, or incites the faculties or appetites.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- n. a flat stone for sharpening edged tools or knives
From whet ("to sharpen") + stone (Wiktionary)