A Reservation

1. The act of reserving, withholding or keeping back. Reservation (law) - Wikipedia
   1. The practice of reserving part of the consecrated bread of the Eucharist for the communion of the sick.
   2. The act of the pope to reserve to himself the right to nominate to certain benefices.
2. Something that is withheld or kept back.
3. (often in the plural) A limiting qualification regarding certainty; a doubt.
4. (US) A tract of land set apart by the US government for the use of a Native American people; Indian reservation (compare Canadian reserve).
5. An arrangement by which accommodation or transport arrangements are secured in advance.
6. (UK) The area which separates opposing lanes of traffic on a divided motorway or dual carriageway; see also central reservation.
7. (India) The setting aside of a certain percentage of vacancies in government institutions for members of backward and underrepresented communities (defined primarily by caste and tribe).

Synonyms

• (advance arrangement): booking
• (central reservation, motorway lane separator): median, median strip
• (Indian reservation): reserve, res, rez