ruler
/'ru:lə/
Học thuậtThân thiện
Definition
- Noun:
- A measuring instrument: A ruler is a flat, straight-edged tool, typically made of wood, plastic, or metal, marked with units of length (like inches or centimeters) and used for drawing straight lines or measuring distances.
- A sovereign or leader: A ruler is a person who governs or commands a country, state, or group of people, exercising authority and control.
Usage and Examples
- As a measuring instrument:
- Use a ruler to draw a straight line.
- The pencil is 15 centimeters long, as measured with a ruler.
- As a sovereign or leader:
- The ancient ruler was known for his wisdom.
- She was a just and fair ruler of her kingdom.
Advanced Usage
- "To be a ruler of": To be the person in control of a specific domain or field, not necessarily political.
- He is a ruler of the local chess tournament, having won it five times.
- Metaphorical use for an instrument of measurement or standard:
- The new policy will serve as a ruler for future decisions. (Here, "ruler" means a standard or guide for judgment.)
Variants and Related Words
- Rule (verb/noun): The action of governing or a principle guiding conduct. ()
- Rulership (noun): The position or period of rule. ()
- Measuring stick (noun): A synonym for the tool sense of "ruler."
Synonyms
- For the tool: Straightedge, measure, scale.
- For the person: Sovereign, monarch, leader, governor, commander.
Related Phrases and Idioms
- To rule with an iron fist/hand: To govern in a very strict and harsh manner.
- The dictator was known to rule with an iron fist.
- As a rule: Usually; generally.
- As a rule, she arrives at work early.
- To rule the roost: To be the person in charge of a place or group.
- Everyone knows it's his grandmother who really rules the roost.
Noun
- measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths
- a person who rules or commands
- swayer of the universe