Noun: ruler roo-lu(r)
- A person who rules or commands
"ruler of the universe"
- 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
"The architect used a ruler to draw precise lines on the blueprint";
- rule
Derived forms: rulers
Type of: actor, doer, measure, measuring rod, measuring stick, worker
Encyclopedia: Ruler