protector
/prəʊˈtektə(r)/noun
1
- a person who protects or defends someone or something保护者, 防御者：
a stalwart protector of civic rectitude.
一位坚定维护公民正直性的人。
2
- often with modifier a thing that protects someone or something from injury保护物：
ear protectors.
护耳。
3
- （一般作Protector）historical a regent in charge of a kingdom during the minority, absence, or incapacity of the sovereign〈史〉（君主未成年、不在或无能时管理王国的）摄政王。
3.1
- （亦作Lord Protector of the Commonwealth）the title of the head of state in England during the later period of the Commonwealth between 1653 and 1659, first Oliver Cromwell (1653- 8), then his son Richard (1658- 9)护国公（1653至1659年间, 英伦三岛共和政体晚期的英国国家元首头衔, 最初是奥利弗·克伦威尔[1653-1658], 后为其子理查德[1658-1659]）。
派生词