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
Your ruler Mercury begins the week retrograde in your sign.
—
Jennifer Culp, Them, 9 Aug. 2024
Your planetary ruler, Mercury, is also retrograde, triggering communication issues and minor setbacks in your personal life.
—Valerie Mesa, Peoplemag, 8 Aug. 2024
In such a universe, rulers and yardsticks would never be straight (solid objects would expand and shrink with the temperature gradient) while the refractive index would make light rays appear to travel in curves rather than lines.
—Quanta Magazine, 30 July 2024
Lay a tape measure or ruler beside their foot and measure from the back of the heel to the longest toe.
—Vincent Iannelli, Parents, 29 July 2024
See all Example Sentences for ruler 
Jennifer Culp, Them, 9 Aug. 2024
Your planetary ruler, Mercury, is also retrograde, triggering communication issues and minor setbacks in your personal life.
—Valerie Mesa, Peoplemag, 8 Aug. 2024
In such a universe, rulers and yardsticks would never be straight (solid objects would expand and shrink with the temperature gradient) while the refractive index would make light rays appear to travel in curves rather than lines.
—Quanta Magazine, 30 July 2024
Lay a tape measure or ruler beside their foot and measure from the back of the heel to the longest toe.
—Vincent Iannelli, Parents, 29 July 2024
See all Example Sentences for ruler
These examples are programmatically compiled from various online sources to illustrate current usage of the word 'ruler.' Any opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback about these examples.
Dictionary Entries Near ruler
Cite this Entry
“Ruler.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ruler. Accessed 18 Aug. 2024.
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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