What is another word for millstones?
Pronunciation: [mˈɪlstə͡ʊnz] (IPA) 
Millstones refer to a pair of circular stones used to grind wheat or other grains into flour. There are several synonyms used for millstones, such as grindstones, querns, hand mills, and flour mills. Grindstones were first used in the Prehistoric era and were made of volcanic rocks, sandstone, or granite. Querns, on the other hand, were smaller hand mills used for grinding grain at home. Flour mills, as the name suggests, are large industrial-sized mills that grind a large quantities of wheat into fine flour. These synonyms for millstones may be used interchangeably depending on the context and the era being discussed.
