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 celestial ruler, Mars, is finally coming up for air, entering your Fire sign sibling Leo and your fifth house of creativity, romance and self-expression.
—
Valerie Mesa, People.com, 3 Nov. 2024
This week, the Sun’s favorite planet is Saturn, the ruler of order, responsibility, and ambition.
—Jennifer Culp, Them, 1 Nov. 2024
On this day in 312: Roman Emperor Constantine the Great defeated the superior forces of his rival Maxentius at the Battle of the Milvian Bridge, securing his position as the sole ruler of the Western Roman Empire.
—Mark Jones, The Arizona Republic, 28 Oct. 2024
The fervid love conquest inspires a wager between La Muerte (Kate del Castillo), ruler of the Land of the Remembered, and Xibalba (Ron Perlman), ruler of the Land of the Forgotten.
—Andrea Flores, Los Angeles Times, 21 Oct. 2024
See all Example Sentences for ruler 
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Valerie Mesa, People.com, 3 Nov. 2024
This week, the Sun’s favorite planet is Saturn, the ruler of order, responsibility, and ambition.
—Jennifer Culp, Them, 1 Nov. 2024
On this day in 312: Roman Emperor Constantine the Great defeated the superior forces of his rival Maxentius at the Battle of the Milvian Bridge, securing his position as the sole ruler of the Western Roman Empire.
—Mark Jones, The Arizona Republic, 28 Oct. 2024
The fervid love conquest inspires a wager between La Muerte (Kate del Castillo), ruler of the Land of the Remembered, and Xibalba (Ron Perlman), ruler of the Land of the Forgotten.
—Andrea Flores, Los Angeles Times, 21 Oct. 2024
See all Example Sentences for ruler
Dictionary Entries Near ruler
Cite this Entry
“Ruler.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/ruler. Accessed 24 Nov. 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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