WordNet (r) 3.0 (2006):

Plato
    n 1: ancient Athenian philosopher; pupil of Socrates; teacher of
         Aristotle (428-347 BC)

V.E.R.A. -- Virtual Entity of Relevant Acronyms (February 2016):

PLATO
       Programmed Logic for Automated Teaching Operations


U.S. Gazetteer Places (2000):

Plato, MN -- U.S. city in Minnesota
   Population (2000):    336
   Housing Units (2000): 145
   Land area (2000):     0.341105 sq. miles (0.883459 sq. km)
   Water area (2000):    0.000000 sq. miles (0.000000 sq. km)
   Total area (2000):    0.341105 sq. miles (0.883459 sq. km)
   FIPS code:            51460
   Located within:       Minnesota (MN), FIPS 27
   Location:             44.773151 N, 94.038658 W
   ZIP Codes (1990):     55370
   Note: some ZIP codes may be omitted esp. for suburbs.
   Headwords:
    Plato, MN
    Plato