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
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
Archaeology News reports the ruler was also associated with other monuments, including the construction of a ballcourt.
—
Maria Mocerino, Interesting Engineering, 25 Oct. 2025
The Alpha also loses the ruler while adding an awl with thread loop.
—New Atlas, 25 Oct. 2025
With the sun and your celestial ruler, Venus, moving through your seventh house of other people, everything from your connections, whether romantic, professional or otherwise, to your contractual agreements is at the forefront.
—Valerie Mesa, PEOPLE, 22 Oct. 2025
The history books say that the French colonial regime exercised firm control over the emperor until the Japanese invasion ended French administration in Indochina in 1945; Bao Dai remained as an essentially powerless ruler until the Viet Minh seized power a few months later.
—Teri Sforza, Oc Register, 22 Oct. 2025
See All Example Sentences for ruler
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Maria Mocerino, Interesting Engineering, 25 Oct. 2025
The Alpha also loses the ruler while adding an awl with thread loop.
—New Atlas, 25 Oct. 2025
With the sun and your celestial ruler, Venus, moving through your seventh house of other people, everything from your connections, whether romantic, professional or otherwise, to your contractual agreements is at the forefront.
—Valerie Mesa, PEOPLE, 22 Oct. 2025
The history books say that the French colonial regime exercised firm control over the emperor until the Japanese invasion ended French administration in Indochina in 1945; Bao Dai remained as an essentially powerless ruler until the Viet Minh seized power a few months later.
—Teri Sforza, Oc Register, 22 Oct. 2025
See All Example Sentences for ruler
Cite this Entry
“Ruler.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ruler. Accessed 28 Oct. 2025.
Copy CitationKids Definition
ruler
noun
rul·er
ˈrü-lər 
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
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