Wordnet polsko-angielski 
                        
1. (an unknown and unexplored region
"they came like angels out the unknown") 
unknown, unknown region, terra incognita 
2. 
terra incognita: : 
1. (an unknown and unexplored region
"they came like angels out the unknown") 
unknown, unknown region, terra incognita 
2. 
terra incognita: :