what is a jinchuriki
Jinchuuriki means human sacrifice. These are the people who have tailed beasts sealed inside them. The tailed beasts are part of the Juubi, which has ten tails. The Juubi was split into nine parts by the Rikudo Sennin, or the Sage of Six Paths, and each was given a personality by him. This personality has been mostly hate, since the tailed beasts obviously abhor being sealed into humans.