ruler

noun

rul·​er ˈrü-lər How to pronounce ruler (audio)
1
: one that rules
specifically : sovereign
2
: a worker or a machine that rules paper
3
: a smooth-edged strip (as of wood or metal) that is usually marked off in units (such as inches) and is used as a straightedge or for measuring
rulership noun

Examples of ruler in a Sentence

a summit attended by a number of rulers from around the world This ruler shows inches and centimeters.
Recent Examples on the Web
Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.
August was all about preparing for the return to school, with popular grocery items including colored pencils, ring binders, index cards, as well as rulers, notebooks, and calculators. Eleanor Pringle, Fortune, 21 June 2025 Responding to persecution by India’s Mughal rulers—and the torture and execution of his father—Hargobind militarized Sikhism. Manvir Singh, New Yorker, 21 June 2025 More importantly, with the sun (your celestial ruler) swimming through Cancer and the depths of your sleepy 12th house of rest, surrender and privacy, you’re likely feeling called to go inward and retreat into your personal sanctuary. Valerie Mesa, People.com, 20 June 2025 His most famous work, The Prince, offered pragmatic, and often controversial, advice to rulers on how to maintain power. Alice Gibbs, MSNBC Newsweek, 19 June 2025 See All Example Sentences for ruler

Word History

First Known Use

14th century, in the meaning defined at sense 1

Time Traveler
The first known use of ruler was in the 14th century

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Cite this Entry

“Ruler.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ruler. Accessed 29 Jun. 2025.

Kids Definition

ruler

noun
rul·​er ˈrü-lər How to pronounce ruler (audio)
1
2
: a straight strip of material (as wood or metal) marked off in units and used as a guide in drawing lines or for measuring

More from Merriam-Webster on ruler

Last Updated: - Updated example sentences
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