reservation

noun

• 1the action of reserving something:the reservation of positions for non-Americans
• an arrangement whereby something, especially a seat or room, is booked or reserved for a particular person:do you have a reservation?
• an area of land set aside for occupation by North American Indians or Australian Aborigines.
• Law a right or interest retained in an estate being conveyed.
• (in the Roman Catholic Church) the practice of retaining a portion of the consecrated elements after mass for communion of the sick or as a focus for devotion.

• 2a qualification to an expression of agreement or approval; a doubt:some generals voiced reservations about making air strikes

• 3(in the Roman Catholic Church) the action of a superior of reserving to himself the power of absolution.
• a right reserved to the pope of nomination to a vacant benefice.