English · Word Candidate

ruler

/ˈɹuːlə/

Proposed by a contributor, not yet supported by evidence.

Also seen as: rulers · rulering · rulered

Sense 1

Meaning · English

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

Noun

Examples

Take this ruler. […] I want you to measure the glass of the lamp.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 2

Meaning · English

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

Noun

Examples

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.

Usage example from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01)

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Sense 3

Meaning · English

To beat with a ruler (as a traditional school punishment).

Verb

Sources & notes

Adapted from English Wiktionary (CC BY-SA 4.0, retrieved 2026-08-01 via kaikki.org).

Common questions

What does “ruler” mean?

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

Is “ruler” formal or informal?

No register label has been reviewed yet — treat it as neutral and check the usage notes above.