Webster's Revised Unabridged Dictionary · 1913

Zion

Zion , noun

[Hebrew tsīyōn, originally, a hill.]

1.
(Jewish Antiquities) 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.