noun (esp formerly)
Examples from the Web for loaf sugar
Mix the juice with a pound of loaf-sugar broken up, and add the grated, rind and the isinglass.
To three pounds of plums allow three pounds and a half of loaf-sugar, broken small or powdered.
Weigh them, and to each pound of fruit allow a pound and a half of loaf-sugar.
To every pint of juice allow a pound of loaf-sugar, and a few of the peach-kernels.
Then weigh the apricots, and to each pound allow a pound of loaf-sugar.