(Originally) †a person giving instruction in military exercises (obsolete); (in later use) a teacher working in the field.
Early 17th century; earliest use found in John Bingham (fl. c1616).
英语词典包含464360条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。