B1
to arrange to have a seat on an aircraft, a room in a hotel, etc.
Dictionary examples:
I reserved a quiet room at the hotel, but got one next to a karaoke bar. (0.0)
I reserved a window seat on the plane, but got a view of the engine instead. (0.0)
I reserved a table at the new restaurant, but they forgot to reserve the food. (0.0)
I reserved a room at the Lamb Hotel. (18.7)
I’m sorry, this seat is reserved. (31.0)
It’s a popular restaurant, and you’ll have to reserve well in advance. (32.1)