rusk

(n) slice of sweet raised bread baked again until it is brown and hard and crisp Brussels biscuit, twice-baked bread, zwieback,

Brussels biscuit twice-baked bread zwieback

ruse rush rust

rub rue RUF rug rum run Rus rut

rube ruby ruck rudd rude ruff ruga Ruhr ruin rule ruly rump rune rung runt ruse rush rust Ruta Ruth

Ruskin