noun

1. in ancient Rome,
   1. any of several magistrates, esp. one appointed to protect the interests and rights of plebeians against violation by patricians
   2. any of the six officers who rotated command over a legion for a period of a year
2. a champion of the people: often used in newspaper names

Etymology: L tribunus, tribune, magistrate, lit., chief of a tribe < tribus, Roman tribal division: see tribe

noun

Etymology: Fr < It tribuna < L tribunal: see tribunal (sense )