"Eighth-size" refers to a specific measurement used in various contexts, often related to paper or musical instruments. In the context of paper, it typically denotes a sheet that is one-eighth the size of a standard sheet, such as letter-size paper. This means that an eighth-size sheet is usually 2.5 inches by 3.5 inches, making it suitable for small notes or cards. In music, "eighth-size" can also describe instruments that are smaller than standard sizes, such as violins or cellos. These smaller instruments are designed for younger or smaller players, allowing them to handle and play more comfortably while still producing quality sound.