a large conical mass of hard refined sugar; sugar loaf
small cube-shaped lumps of this, the form in which it was often sold
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
How to use loaf sugar in a sentence
Fruit pies with lids should have loaf sugar grated over them.A Poetical Cook-Book | Maria J. Moss
In another pot boil two quarts of green peas, with a large bunch of mint, a little salt, and three or four lumps of loaf sugar.
When done, mix with them a quarter of a pound of loaf-sugar powdered, and the juice and grated peel of half a lemon.
Stir into it two ounces of powdered loaf-sugar, and two large spoonfuls of cream.
Put a pound of double-refined loaf-sugar into a preserving kettle, and pour the juice over it.