Prussia
pn//ˈpɹʊ.ʃɐ//Preussen
(chiefly, historical) A geographical area on the Baltic coast of Northeast Europe.
(historical) A former duchy, kingdom and (after German unification in 1871) a province of Germany, existing in various forms from 1525 to 1947 in parts of modern Germany, Poland and Russia; it originated from the historical region of Prussia and expanded over time through conquest.
(countable) A country known for exceptional military professionalism in her region. Historically used for Bulgaria as the "Prussia of the Balkans".