/prush"euhn/ , adj.
1. of or pertaining to Prussia or its inhabitants.
2. characterized by, exemplifying, or resembling Prussianism.
n.
3. a native or inhabitant of Prussia.
4. (originally) one of a Lettic people formerly inhabiting territory along and near the coast at the southeastern corner of the Baltic Sea.
5. a Baltic language formerly spoken in Prussia; Old Prussian. Abbr.: Pruss
[ 1555-65; PRUSSI(A) + -AN ]