Manual

noun

1. A handbook.
2. A booklet that instructs on the usage of a particular machine or product.

   "The dishwasher isn't working; can you remember where we put the manual?"

3. A drill in the use of weapons, etc.
4. An old office-book like the modern Roman Catholic ritual.
5. A keyboard for the hands on a harpsichord, organ, or other musical instrument.