Definition of platt:
(n) :
A surname.
(n) :
(rare) Plattdeutsch, Low German
(n) :
An unincorporated community in DeSoto County, Florida, United States.
(n) :
A village in Zellerndorf municipality, Hollabrunn district, Lower Austria.
(n) :
A village and civil parish in Tonbridge and Malling district, Kent, England (OS grid ref TQ6257).
(n) :
A ghost town in Angelina County, Texas, United States.