rusk

n. [ Sp. rosca de mar sea rusks, a kind of biscuit, rosca properly meaning, a screw, spiral. ] 1. A kind of light, soft bread made with yeast and eggs, often toasted or crisped in an oven; or, a kind of sweetened biscuit. [ 1913 Webster ]

2. A kind of light, hard cake or bread, as for stores. Smart. [ 1913 Webster ]

3. Bread or cake which has been made brown and crisp, and afterwards grated, or pulverized in a mortar. [ 1913 Webster ]