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English definition of “book”

book

verb     /bʊk/
[I or T] mainly UK to arrange a place on a flight, a room in a hotel, a ticket for an event, etc. for a particular time in the future: Because tickets are limited, you have to book early.book a flight/holiday/show When he tried to book a flight home to Australia, his credit card was refused. book a table/room/seat.book an appointment/meeting If you want to see Ms. Smith you'll have to book an appointment.book sth for sth It's the day we have provisionally booked for the launch of the new media website. → See also reserve
[T] ACCOUNTING to make a record of something in a company's accounts: The loss would have been much larger had they not booked an £8m profit from property sales.book sth in sth Jarvis expects to be able to book some or all of that figure in the current year's accounts.
(Definition of book verb from the Cambridge Business English Dictionary © Cambridge University Press)
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