book up


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book something up

to reserve all the available places. The travel agency booked all the good seats up. Who booked up all these seats?
See also: book, up

book up

v.
To reserve all the available places or times, such as seats, rooms, or appointment hours, from something or someone: We couldn't get a place to sit because someone had booked up the entire restaurant. There are only two small hotels on the island, and their regular customers book them up a year in advance. You'll never get an appointment; the doctor is booked up through the next month.
See also: book, up