Definitions

1. noun

A historical state in Northern Europe, from 1525 to 1947, that included present-day Germany, Poland, and parts of Russia, or the German kingdom that existed from 1701 to 1918.

“The Prussian army played a crucial role in the Battle of Waterloo.”

2. proper noun

A historical region in Eastern Europe, now part of Poland, Russia, and Lithuania, that existed from the 13th to the 18th century, or the historical German state that existed from 1871 to 1918.

“The Teutonic Knights once ruled over the Prussian region.”