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Meaning of “double-book” in the English Dictionary

"double-book" in British English

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double-bookverb [I, T often passive]

uk   /ˌdʌb.əlˈbʊk/  us   /ˌdʌb.əlˈbʊk/
to ​promise the same ​room, ​seat, ​ticket, etc. to more than one ​person or ​group: The ​room was double-booked so they had to give us a different one.
(Definition of double-book from the Cambridge Advanced Learner’s Dictionary & Thesaurus © Cambridge University Press)

"double-book" in Business English

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double-bookverb [I or T]

uk   us  
to ​sell the same ​room, ​seat, or ​share to more than one ​person: A ​customercomplained that they had double-booked his ​room. 21.4 million ​shares were ​booked as having been ​bought, but later were ​found to have been double-booked.
to ​agree to be at two ​meetings or ​events that ​happen at the same ​time: Make sure your ​diary is ​handy so you don't double-book.
(Definition of double-book from the Cambridge Business English Dictionary © Cambridge University Press)
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“double-book” in Business English

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