• noun:   a span of 1000 years
• noun:   the 1000th anniversary (or the celebration of it)
• noun:   (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

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