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
Many Christian clerics and secular rulers in western Europe believed that the popes needed to return to Rome, to distance papal authority from French influence.
—
Joanne M. Pierce, The Conversation, 28 Jan. 2025
After all, cats may not think of themselves as 'cats' but as rulers of their kingdoms, so perhaps being allergic to one's subjects isn't so surprising.
—Barbara A. Perry, Newsweek, 27 Jan. 2025
The crown prince, the de facto ruler of the oil-rich kingdom, also spoke with U.S. Secretary of State Marco Rubio early Thursday.
—Democrat-Gazette Staff From Wire Reports, arkansasonline.com, 24 Jan. 2025
Centering on an extravagantly coifed and costumed Michelle Yeoh as Philippa Georgiou, the onetime ruthless ruler of a dehydrated parallel universe, the action veers from camp to cartoon and back again.
—Jeannette Catsoulis, New York Times, 23 Jan. 2025
See all Example Sentences for ruler 
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Joanne M. Pierce, The Conversation, 28 Jan. 2025
After all, cats may not think of themselves as 'cats' but as rulers of their kingdoms, so perhaps being allergic to one's subjects isn't so surprising.
—Barbara A. Perry, Newsweek, 27 Jan. 2025
The crown prince, the de facto ruler of the oil-rich kingdom, also spoke with U.S. Secretary of State Marco Rubio early Thursday.
—Democrat-Gazette Staff From Wire Reports, arkansasonline.com, 24 Jan. 2025
Centering on an extravagantly coifed and costumed Michelle Yeoh as Philippa Georgiou, the onetime ruthless ruler of a dehydrated parallel universe, the action veers from camp to cartoon and back again.
—Jeannette Catsoulis, New York Times, 23 Jan. 2025
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 2 Feb. 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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