- a stone used for sharpening edged tools, knives, etc
- something that sharpens
WordReference Random House Unabridged Dictionary of American English © 2026
whet•stone
(hwet′stōn′, wet′-),USA pronunciation n.
- a stone for sharpening cutlery or tools by friction.
- anything that sharpens:a whetstone for dull wits.
- Middle English whetston, Old English hwetstān. See whet, stone bef. 900
Collins Concise English Dictionary © HarperCollins Publishers::
whetstone /ˈwɛtˌstəʊn/ n
'whetstone' also found in these entries (note: many are not synonyms or translations):