Millennium (season 3)
WordNet
noun
(1) A span of 1000 years
(2) The 1000th anniversary (or the celebration of it)
(3) (New Testament) in Revelations it is foretold that those faithful to Jesus will reign with Jesus over the earth for a thousand years; the meaning of these words have been much debated; some denominations (e.g. Jehovah's Witnesses) expect it to be a thousand years of justice and peace and happiness