[Urdū, Hindī suttū(a).] (See quots.)
1886. A. H. Church, Food Grains Ind., 100. The grain [sc. barley] … is parched and ground into coarse flour called suttú.
1908. Animal Managem., 104. ‘Suttoo’ is a gruel made by stirring finely-ground gram in water.
