Definitions of millennium on the Web:

• a span of 1000 years
• (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
• the 1000th anniversary (or the celebration of it)
  wordnetweb.princeton.edu/perl/webwn

• Millennium is a maxi single off the studio album Millennium by the Industrial band Front Line Assembly. This album was released August 23, 1994 on the Roadrunner Records label.
  en.wikipedia.org/wiki/Millennium_(Front_Line_Assembly_song)

• Millennium (1998) is an Estonian mockumentary film directed by Tõnu Trubetsky about the seminal Estonian punk band, Vennaskond. ...
  en.wikipedia.org/wiki/Millennium_(1998_film)

• Millennium is a 1983 science fiction novel by John Varley. It was nominated for the Hugo Award for Best Novel in 1984.
  en.wikipedia.org/wiki/Millennium_(novel)

• Millennium was an Death metal album released in 1996 by Monstrosity and produced by Scott Burns.
  en.wikipedia.org/wiki/Millennium_(Monstrosity_album)

• Millennium Station (formerly Randolph Street Terminal; sometimes called Randolph Street Station or Randolph/South Water Street Station) is a major commuter rail terminal in downtown Chicago that serves the Metra Electric Line to University Park, Blue Island, and South Chicago; and the South ...
  en.wikipedia.org/wiki/Millennium_(Metra)

• Millennium is one of India’s premier metal band from Bangalore. The band was formed in 1985 and is recognized as one of the front runners of the Indian Metal scene.
  en.wikipedia.org/wiki/Millennium_(band)

• Millennium Golf Discs was founded in 1995 by John Houck and Harold Duvall. In 2008, Millennium became a subsidiary of Circular Productions, LLC ...
  en.wikipedia.org/wiki/Millennium_(Disc_Golf)

• "Millennium" is the fourth episode of the seventh season of The X-Files. It is a crossover with the show Millennium.
  en.wikipedia.org/wiki/Millennium_(The_X-Files)

• Millennium is an album by American pop music group Backstreet Boys. It broke numerous records, and is their biggest success to date. It was a highly anticipated follow-up to both their United States debut album, and their second internationally released CD. ...
  en.wikipedia.org/wiki/Millennium_(Backstreet_Boys_album)

• A millennium (pl. millenniums or millennia) is a period of time equal to one thousand years (from Latin mille, thousand, and annum, year). ...
  en.wikipedia.org/wiki/Millennium

• This is a list of the various Star Trek novels, novelisations, short story collections that have been published since 1968. Through this time, three main companies have published Star Trek fiction: Bantam Books (from 1967 to 1981), Ballantine Books (from 1974 to 1978), and since 1979 Pocket Books.
  en.wikipedia.org/wiki/Millennium_(Star_Trek)

• "Millennium" is a song by Robbie Williams, released as the first single from his second album, I've Been Expecting You. The song was released in 1998.
  en.wikipedia.org/wiki/Millennium_(song)