tribune

noun5

1. •
   (figurative) A protector of the people; a public figure who appeals to and on behalf of the people through oratory.
2. •
   (historical) An elected official in Ancient Rome, a tribune of the plebs.
3. •
   (historical) A military officer in Ancient Rome ranking below a legate and above a centurion, a military tribune.
4. •
   Synonym of pulpit, a platform, a place or opportunity to express one's opinion

   • The new magazine's goal is to give a tribune to unmarried mothers.
5. •
   The domed or vaulted apse in a cathedral housing the bishop's throne (see).