a span of 1000 years | a sum or aggregate of one thousand (especially one thousand years) |
(New Testament) in the Book of Revelation 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 | a span of 1000 years |
the 1000th anniversary (or the celebration of it) | the 1000th anniversary (or the celebration of it) |