kwˈɜːnstˈoʊnz wɜː jˈuːzd tə ɡɹˈaɪnd mətˈɪɹiəlz, ðə mˈoʊst ɪmpˈoːɹtənt ʌvwˈɪtʃ wʌz jˈuːʒuːəli ɡɹˈeɪn tə mˌeɪk flˈaʊɚ fɔːɹ bɹˈɛdmˈeɪkɪŋ.
Quern-stones were used to grind materials, the most important of which was usually grain to make flour for bread-making.