Prussia

(chiefly historical) A geographical area on the Baltic coast of northeastern Europe.

(historical) A Baltic country located in this area, conquered by the Teutonic Order and ultimately absorbed into Germany.

(historical) A German province which was originally located in this area but later greatly expanded, and which was the predecessor to and a member of the German Empire; abolished as an administrative unit at the end of the Second World War.

(countable) A country known for exceptional military professionalism in her region. Historically used for Bulgaria as the "Prussia of the Balkans".