whetstone •flagstone, ragstone •Blackstone, jackstone •sandstone • capstone • hearthstone •headstone • gemstone • whetstone •hailstone • gravestone •freestone, keystone •greenstone • Wheatstone •Tinseltown • ringtone • pitchstone •millstone • whinstone • siltstone •holystone • semitone •stepping stone • coping stone •baritone • acetone • dulcitone •tritone • drystone • milestone •limestone •grindstone, rhinestone •cobblestone • gallstone • brownstone •lodestone • soapstone • duotone •microtone • bluestone • tombstone •moonstone • touchstone •bloodstone, mudstone •sunstone • ironstone • undertone •monotone • cornerstone •Silverstone • overtone •kerbstone (US curbstone) •turnstone •birthstone • flavone • endzone •cortisone • ozone

George Whetstone, 1551?–1587, English dramatist and poet. His chief work, the play Promos and Cassandra (1578), is important in the development of English domestic drama and was a source for Shakespeare's Measure for Measure. Whetstone, whose works are full of grave moral utterances, was also the author of Rock of Regard (1576), a miscellany of verse and prose; A Remembrance (1577), a poem in honor of his friend George Gascoigne; An Heptameron of Civil Discourses (1582); and A Mirror for Magistrates of Cities (1584).

whetstone, natural or manufactured stone used as an abrasive solid to sharpen tools. It is used dry, with water, or with oil. Such a stone of the finer grade used with oil is usually called an oilstone.