• Ruler

    Pronunciation

    • RP IPA: /ˈɹuːlə(ɹ)/
    • GenAm IPA: /ˈɹuːlɚ/
    • Rhymes: -uːlə(ɹ)

    Origin

    {1} + -er.

    Full definition of ruler

    Noun

    ruler

    (plural rulers)
    1. A (usually rigid), flat, rectangular measuring or drawing device with graduations in units of measurement; a rule; a straightedge with markings; a measure.
    2. A person who rules or governs; a person who exercises dominion or controlling power over others.

    Usage notes

    In American English, the word "ruler" is often used specifically to refer to such a measuring device that is one foot (12 inches) long. Used in contrast with "yardstick" and "meter stick."

    Synonyms

    • (measuring instrument) rule.
    © Wiktionary