Senator

Noun

1. A member, normally elected, in the house or chamber of a legislature called a senate, as, for instance, the legislatures of the United States and Canada.
2. A member of any legislative body or parliament, particularly the British Parliament.
3. A member of the ancient Roman Senate.
4. A member of a governing council in other states in the ancient world.
5. A member of the ruler’s council or governing council in general, a leading statesman.