(theater) Able to perform scripted material from memory, without need to refer to the text. / (accounting) Off the books, not officially recorded.

(arachnology) A lamellate respiratory organ found in arachnids.

The Bible, or by extension the scripture of another religion.

(obsolete) An ABC book; abecedary; a primer.

(publishing) A book that is marketed to a general audience (as opposed to books that have specialized audiences, such as academic books).

Alternative form of phrase book

A book providing factual information. / (libraries) A book that can be consulted in the library but cannot be borrowed.

(slang) A book for writing unpleasant information about others.

Alternative spelling of bookstore

Alternative spelling of bookshop