manual
A booklet that instructs on the usage of a particular machine or product.
Other meanings
A drill in the use of weapons, etc.
An old office-book like the modern Roman Catholic ritual.
Word history
From Latin "manuāle" (handbook, manual).
Where this comes from
This definition is adapted from “manual” on Wiktionary, by its contributors, published under CC BY-SA 4.0. This page is published under the same licence.