grindstone Synonyms

hone grinding stone grinding wheel whetstone millstone abrasive wheel sweat beast of burden mollymawk sharpen sickle work steel undertaking tool toil task swink screwdriver abrasive stone abrasive disk grinding disc knife grinder salt mines emery wheel emery stone sharpening stone sharpener quernstone arrastra scythe ripsaw responsibility grind grater function file emery drudgery drudge chore business burden axe awl auger assignment grinder gristmill quern