The Collaborative International Dictionary of English v.0.48:

Tribune \Trib"une\, n. [L. tribunus, properly, the chief of a
   tribe, fr. tribus tribe: cf. F. tribun. See Tribe.]
   1. (Rom. Antiq.) An officer or magistrate chosen by the
      people, to protect them from the oppression of the
      patricians, or nobles, and to defend their liberties
      against any attempts that might be made upon them by the
      senate and consuls.
      [1913 Webster]

   Note: The tribunes were at first two, but their number was
         increased ultimately to ten. There were also military
         tribunes, officers of the army, of whom there were from
         four to six in each legion. Other officers were also
         called tribunes; as, tribunes of the treasury, etc.
         [1913 Webster]

   2. Anciently, a bench or elevated place, from which speeches
      were delivered; in France, a kind of pulpit in the hall of
      the legislative assembly, where a member stands while
      making an address; any place occupied by a public orator.
      [1913 Webster]

WordNet (r) 3.0 (2006):

tribune
    n 1: (ancient Rome) an official elected by the plebeians to
         protect their interests
    2: the apse of a Christian church that contains the bishop's
       throne

Moby Thesaurus II by Grady Ward, 1.0:

34 Moby Thesaurus words for "tribune":
   Areopagite, archon, balcony, catafalque, dais, deemster, dempster,
   doomsman, doomster, emplacement, estrade, floor, gallery, heliport,
   hustings, justiciar, justiciary, landing, landing pad,
   landing stage, launching pad, platform, podesta, podium, praetor,
   pulpit, rostrum, soapbox, stage, step terrace, stump, syndic,
   terrace, tribunal



U.S. Gazetteer Places (2000):

Tribune, KS -- U.S. city in Kansas
   Population (2000):    835
   Housing Units (2000): 425
   Land area (2000):     0.747538 sq. miles (1.936114 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.747538 sq. miles (1.936114 sq. km)
   FIPS code:            71450
   Located within:       Kansas (KS), FIPS 20
   Location:             38.470288 N, 101.754489 W
   ZIP Codes (1990):     67879
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Tribune, KS
    Tribune