tribune

Concise Oxford English Dictionary © 2008 Oxford University Press:
tribune1

▶noun

• 1 (also tribune of the people) an official in ancient Rome chosen by the plebeians to protect their interests.

  ■ (also military tribune) a Roman legionary officer.

• 2 a champion of the people.

– derivatives
tribunate noun,
tribuneship noun.

– origin ME: from L. tribunus, lit. ‘head of a tribe’, from tribus ‘tribe’.

Concise Oxford English Dictionary © 2008 Oxford University Press:
tribune2

▶noun

• 1 an apse in a basilica.

• 2 a dais, rostrum, or other raised area, especially in a church.

– origin C17 (denoting the principal room in an Italian mansion): via Fr. from Ital., from med. L. tribuna, alt. of L. tribunal (see tribunal).