1 : to make arrangements so that you will be able to use or have (something, such as a room, table, or seat) at a later time [+ obj] ▪ We booked [=reserved] a hotel room. ▪ They booked two seats at the theater. ▪ They booked tickets for a direct flight from London to New York. ▪ I booked a table at our favorite restaurant. [no obj] ▪ She booked through her travel agent. ▪ We will need to book early. ◊This sense is used in U.S. English, but it is more common in British English. In U.S. English, reserve or make a reservation for is more commonly used. ◊When a hotel, restaurant, etc., is booked (up), booked solid, or fully booked, there are no more rooms, tables, etc., available. These forms are commonly used in both U.S. and British English.
▪ The hotels in the city were booked solid for the conference. ▪ The flight was fully booked. ▪ The hotel was all booked up for the week. 2 [+ obj] : to make arrangements for (someone) to do, use, or have something at a later time
▪ She booked me on a flight from Oslo to Paris. ▪ He was booked to sail on Monday. 3 [+ obj] : to schedule a performance or appearance by (someone, such as a musician)
▪ The band was booked to play at the reception. ▪ book a singer 4 [+ obj] law : to write down in an official police record the name of (a person who is being charged with a crime) — usually used as (be) booked ▪ She was booked on suspicion of murder. 5 [+ obj] Brit, of a soccer referee : to write down in an official book the name of (a player who has broken the rules in a game) — usually used as (be) booked ▪ He was booked for a late tackle.