Source : Webster's Revised Unabridged Dictionary (1913)

Zion \Zi"on\, n. [Heb. ts[=i]y?n, originally, a hill.]
   1. (Jewish Antiq.) A hill in Jerusalem, which, after the
      capture of that city by the Israelites, became the royal
      residence of David and his successors.

   2. Hence, the theocracy, or church of God.

   3. The heavenly Jerusalem; heaven.

Source : WordNet®

Zion
     n 1: originally a stronghold captured by David (the 2nd king of
          the Israelites); above it was built a temple and later
          the name extended to the whole hill; finally it became a
          synonym for the city of Jerusalem; "the inhabitants of
          Jerusalem are personified as `the daughter of Zion'"
          [syn: {Sion}]
     2: Jewish republic in southwestern Asia at eastern end of
        Mediterranean; formerly part of Palestine [syn: {Israel},
        {State of Israel}, {Yisrael}, {Sion}]
     3: an imaginary place considered to be perfect or ideal [syn: {Utopia},
         {Sion}]