Ruler Meaning

/ˈɹuːlə/
A2

Definition, CEFR level A2, pronunciation, examples, and quiz.

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nounA (usually rigid), flat, rectangular measuring or drawing device with graduations in units of measurement; a straightedge with markings.

nounA person who rules or governs; someone or something that exercises dominion or controlling power over others.

Alfred, King of England, was a great scholar as well as a great ruler.
Measure the length of the stick with a ruler.
Synonyms:
Antonyms:
None
CEFR Practice Quiz
The queen was a kind and fair ____ who worked to improve the lives of all her subjects.
CEFR Practice Quiz (Alternate)
The student used a ____ to draw a straight line across the page of her notebook.

From Middle English reuler; equivalent to rule + -er.

"Take this ruler. […] I want you to measure the glass of the lamp." — 1914, Ernest Bramah, Max Carrados:
"The carcharhinids are unquestionably the rulers of the seas, because of their abundance, their strength and speed, and their unchallenged position as the number one predators in the marine ecosystem." — 1983, Richard Ellis, The Book of Sharks, Knopf, →ISBN, page 122:
"LIKE THE MANDARINS of old, the rulers of China live behind high walls. When they emerge, which they rarely do, they travel in cars with rear windows curtained like sedan chairs. They live in the Chung Nan Hai, a walled park adjacent to the Forbidden City from where ancient dynasties ruled the Celestial Empire." — 1991, Chris Mullin, The Year of the Fire Monkey (Fiction), London: Chatto & Windus, →ISBN, →OCLC, page 252:

Explore More A2 Vocabulary Words

CEFR Practice Quiz
The queen was a kind and fair ____ who worked to improve the lives of all her subjects.
CEFR Practice Quiz (Alternate)
The student used a ____ to draw a straight line across the page of her notebook.

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