reservation

ot noun

1. The act of reserving, withholding or keeping back. The committee authorised the reservation of funds.
2. (often in the plural) A limiting qualification; a doubt. I have reservations about your intentions.
3. An arrangement by which accommodation or transport arrangements are secured in advance. I have a hotel reservation in the name of Mr Smith.
4. The area which separates opposing lanes of traffic on a divided motorway or dual carriageway; see also central reservation. A vehicle crashed through the central reservation into the path of oncoming traffic.