guardian

1. N-COUNT A guardian is someone who has been legally appointed to take charge of the affairs of another person, for example a child or someone who is mentally ill. 监护人

Destiny's legal guardian was her grandmother. 德斯蒂妮的法定监护人是她的祖母。

2. N-COUNT The guardian of something is someone who defends and protects it. 保护者

...an institution acting as the guardian of democracy in Europe. …一个在欧洲扮演民主捍卫者的机构。