/ˈsɛnətər/ – Noun
Definition: Thượng nghị sĩ.
A more throughout explanation: 1. a member of a senate (=the upper house of a legislature; the administrative body of a university or other institution).
2. the term Senator (with a capital letter) is the title given to the member of a senate
Example: 1. She is a former senator.
2. The protests have been led by Senator John McCain.