noun🔗ShareA (usually rigid), flat, rectangular measuring or drawing device with graduations in units of measurement; a straightedge with markings."The carpenter used a ruler to measure the length of the wood carefully. "stationeryutensilmathdeviceChat with AIVocabulary GamePractice Reading
noun🔗ShareA person who rules or governs; someone or something that exercises dominion or controlling power over others."The school principal is the ruler of the student body. "politicsgovernmentroyalnationChat with AIVocabulary GamePractice Reading
verb🔗ShareTo beat with a ruler (as a traditional school punishment)."The teacher ruled the student's hand with a ruler for misbehaving in class. "educationactionhistorycultureChat with AIVocabulary GamePractice Reading
