noun. A handbook; a manual.

noun. A book to be carried in the hand; a manual; a handbook.

noun. Specifically— A Roman Catholic service-book containing the Little Office of the Virgin.

noun. An ecclesiastical manual of the Greek Church.

noun. Handbook; a manual of devotions.

noun. A handbook or manual.

noun. a concise reference book providing specific information about a subject or location

"The plot twists were a little too convenient, and the language at times was a little unbelievable (okay she's an academic, but does that really give her the right to use the word enchiridion to describe a parenting book?)."

handbook  

enchiridia