c.1380, "act of reserving," from M.Fr. reservation,
from L.L. reservationem
), from L. reservatus,
pp. of reservare
). U.S. Indian tribe sense is recorded from 1789, originally in ref. to the Six Nations in New York State. Meaning "act or fact of engaging a room, a seat, etc." is from 1904, originally Amer.Eng.