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Noun: ruler  roo-lu(r)
  1. A person who rules or commands
    "ruler of the universe"
  2. Measuring stick consisting of a strip of wood, metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths
    - rule

Derived forms: rulers

Type of: individual, measure, measuring rod, measuring stick, mortal, person, somebody, someone, soul

Encyclopedia: Ruler