noun
cube sugar; sugar cube
Refers to sugar pressed into small cubes, commonly used for sweetening coffee or tea.
コーヒーに角砂糖を二つ入れてください。
Please put two sugar cubes in the coffee.
角砂糖が溶けるまでかき混ぜる。
Stir until the sugar cubes dissolve.
Compound of 角 (かく, 'square') and 砂糖 (さとう, 'sugar'), literally 'square sugar'.