It means to reserve or arrange for something in advance, especially a seat, room, or table.
Examples:
* I booked a flight to Paris.
* We need to book a table for dinner.
* She booked a hotel room online.
It means to reserve or arrange for something in advance, especially a seat, room, or table.
Examples:
* I booked a flight to Paris.
* We need to book a table for dinner.
* She booked a hotel room online.