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Added 1 October 2026

book

/bʊk/ noun

In Latin: liber, caudex Wiktionary

noun Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about book at Wordnik → Where our words come from →

A collection of sheets of paper bound together to hinge at one edge, containing printed or written material, pictures, etc.
She opened the book to page 37 and began to read aloud.
A long work fit for publication, typically prose, such as a novel or textbook, and typically published as such a bound collection of sheets, but now sometimes electronically as an e-book.
I have three copies of his first book.
A major division of a long work.
Genesis is the first book of the Bible.

verb

To reserve (something) for future use.
I want to book a hotel room for tomorrow night.
To write down, to register or record in a book or as in a book.
They booked that message from the hill.
To add a name to the list of people who are participating in something.
I booked a flight to New York.

verb

simple past of bake

Origin

From Middle English bok, book, from Old English bōc, from Proto-West Germanic *bōk, from Proto-Germanic *bōks. Bookmaker sense by clipping.

From Wiktionary, via Kaikki.org (CC BY-SA)

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