reservation (reservations plural )
1 n-var If you have reservations about something, you are not sure that it is entirely good or right.
I told him my main reservation about his film was the ending...
2 n-count If you make a reservation, you arrange for something such as a table in a restaurant or a room in a hotel to be kept for you.
(=booking)
He went to the desk to make a reservation...
3 n-count A reservation is an area of land that is kept separate for a particular group of people to live in.
Seventeen thousand Indians live in Arizona on a reservation.
central reservation (central reservations plural )The central reservation is the strip of ground, often covered with grass, that separates the two sides of a major road.
(BRIT) n-count
in AM, use median , median strip