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noun A1 Beginner Common

ruler

ROO-luh

Ruler (noun) means a flat, straight-edged tool marked with measurement units, used for drawing lines or measuring length. Example: “He measured the box with a wooden ruler.”

noun
1
A flat, straight-edged tool marked with measurement units, used for drawing lines or measuring length.
"He measured the box with a wooden ruler."
2
A person who governs or holds supreme authority over a country or people.
"The ancient ruler expanded the empire's borders significantly."

How to use ruler

Learner’s notes

In plain EnglishEither the measuring tool in your pencil case, or a monarch/leader in charge of a country.

Common pairings
ruler and pencil absolute ruler sole ruler

Word forms

rulered past tense, rulers plural, rulers singular

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Test yourself on “ruler” A quick quiz — meaning, synonyms & usage

Fill the gap

Can you complete this real example?

He measured the box with a wooden _____.

Etymology

From Middle English reuler, formed from rule plus the agent suffix -er.

Origin: Middle English

Related words

Frequently asked questions

What does “ruler” mean?

The word “ruler” means a flat, straight-edged tool marked with measurement units, used for drawing lines or measuring length. In plain terms, either the measuring tool in your pencil case, or a monarch/leader in charge of a country.

How do you pronounce “ruler”?

“Ruler” is pronounced ROO-luh (/ˈɹulɚ/ in IPA).

How do you use “ruler” in a sentence?

Here is “ruler” used in a sentence: “He measured the box with a wooden ruler.”

What is another word for “ruler”?

Words with a similar meaning to “ruler” include overling and provost.

What part of speech is “ruler”?

“Ruler” is a noun.

Where does the word “ruler” come from?

The word “ruler” comes from Middle English. From Middle English reuler, formed from rule plus the agent suffix -er.

Is “ruler” a common word?

“Ruler” is a fairly common word in modern English, usually learned at around the A1 level.

How many meanings does “ruler” have?

“Ruler” has 2 distinct senses listed in this dictionary. The most common is: a flat, straight-edged tool marked with measurement units, used for drawing lines or measuring length.

What is the difference between a ruler and a monarch?

A ruler is a general term for any person who governs or holds supreme authority over a country or people, including monarchs, presidents, or dictators. A monarch is a specific type of ruler whose position is typically hereditary, such as a king or queen.

What is the difference between a ruler and a leader?

A ruler holds supreme governing authority, often unchecked or long-term, over a country or people, while a leader can guide any group, from a country to a small team, without necessarily holding formal governing power. All rulers are leaders in a broad sense, but not all leaders are rulers.

Why does ruler have two such different meanings?

Ruler refers both to a measuring tool with a straight edge marked in units and to a person who governs, and the two senses are unrelated in origin despite sharing the same spelling. Context, such as talk of drawing lines versus governing a country, makes clear which meaning is intended.

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Definitions: FreeDict original editorial