ruler
UK: ˈruːlə | US: ˈruːlər
n. a straight-edged strip used for measuring or drawing straight lines
n. a person who governs or exercises dominion
ruler = rule<govern/measure> + er<agent suffix>
- rule: From Old French reule (later règle), meaning "principle, standard, or straight edge," derived from Latin regula ("straight stick, bar, pattern").
- er: An English agent suffix indicating "one who does something" (e.g., teacher, runner).
Etymology Origin:
The word ruler combines the concept of governance (from rule) with the tool's function (a straight edge for measuring). The Latin regula (related to rex, "king") originally meant a physical guide for alignment, later metaphorically extending to laws or standards. The suffix -er solidifies its dual meaning: a person who governs or an object that measures.
The king was a wise and just ruler.
She used a wooden ruler to draw straight lines.
Ancient rulers often commissioned grand monuments.
The teacher handed out rulers for the geometry lesson.
A transparent ruler makes it easier to align text.