What is the meaning of reservation?

noun

• A district that is reserved for particular purpose.
  • synonyms: reserve
• A statement that limits or restricts some claim.
  • usage: "he recommended her without any reservations"
  • synonyms: qualification
• An unstated doubt that prevents you from accepting something wholeheartedly.
  • synonyms: mental reservation, arriere pensee
• The act of reserving (a place or passage) or engaging the services of (a person or group. )
  • usage: "wondered who had made the booking"
  • synonyms: booking
• The written record or promise of an arrangement by which accommodations are secured in advance.
• Something reserved in advance (as a hotel accommodation or a seat on a plane etc.. )
• The act of keeping back or setting aside for some future occasion. .