rulers
n. countablen. people who have the power to lead a country or group. It can also mean the flat tools you use to measure things or draw straight lines.
n. individuals who exercise ultimate power or authority over a territory or people; alternatively, instruments used for measuring length or drawing straight lines.
The rulers of the ancient kingdom built massive stone monuments.
Students are required to bring their own pens, pencils, and rulers to the geometry exam.
History often remembers the rulers who expanded their borders through conquest, yet those who fostered internal stability through legal reform frequently left a more lasting legacy.
When referring to people, the term is often used in a historical or political context; when referring to tools, it is a standard classroom noun.