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ruler

play
noun rul·er \ˈrü-lər\

Simple Definition of ruler

  • : a person (such as a king or queen) who rules a country, area, group, etc.

  • : a straight piece of plastic, wood, or metal that has marks on it to show units of length and that is used to measure things

Source: Merriam-Webster's Learner's Dictionary

Full Definition of ruler

  1. 1 :  one that rules; specifically :  sovereign

  2. 2 :  a worker or a machine that rules paper

  3. 3 :  a smooth-edged strip (as of wood or metal) that is usually marked off in units (as inches) and is used as a straightedge or for measuring

rulership

play \-ˌship\ noun

Examples of ruler in a sentence

  1. a summit attended by a number of rulers from around the world

  2. This ruler shows inches and centimeters.



14th Century

First Known Use of ruler

14th century


RULER Defined for Kids

ruler

play
noun rul·er \ˈrü-lər\

Definition of ruler for Students

  1. 1 :  a person (as a king or queen) having supreme power over a nation

  2. 2 :  a straight strip (as of plastic, wood, or metal) with a smooth edge that is marked off in units and used for measuring or as a guide in drawing straight lines





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