Meaning of ruler

rul•er

Pronunciation: (r'lur), [key]
— n.
  1. a person who rules or governs; sovereign.
  2. a strip of wood, metal, or other material having a straight edge and usually marked off in inches or centimeters, used for drawing lines, measuring, etc.
  3. a person or thing that rules paper, wood, etc.
  4. the planet primarily associated with any sign of the zodiac or any house of the horoscope: The ruler of Aries is Mars. The ruler of Taurus is Venus.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.
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