Reservation

noun

1. The act of reserving; a keeping back or withholding.

   "the reservation of the right to use the property."

3. A limiting qualification, condition, or exception.

   "accepted with the reservation that she would have to leave early."

4. A doubt or misgiving.

   "has reservations about the proposal."

5. A tract of land set apart by the federal government for a special purpose, especially one for the use of a Native American people.