Senate (noun)

1. A council or assembly of elders that advises or makes decisions on behalf of a tribe or nation.
2. A legislative body, typically the upper house of a bicameral legislature.

Origin:

Late middle english: from latin senatus "council of elders", from senex "old man".

Examples:

1. The Roman senate was a powerful governing body.
2. The senate passed a bill to increase funding for education.
3. The senate met to discuss the budget for the upcoming year.
4. The senate voted to confirm the new Supreme Court justice.
5. The tribal senate met to discuss issues affecting their community.