Pencil sharpener - online puzzles

A pencil sharpener (also referred to in Ireland as a parer or topper) is a device for sharpening a pencil 's writing point by shaving away its worn surface. Pencil sharpeners may be operated manually or by an electric motor. It is common for many sharpeners to have a casing around them, which can be removed for emptying the pencil shavings debris into a trash bin.