Wordnet polsko-angielski 
                         (verse in which certain letters such as the first in each line form a word or message) 
acrostic 
Słownik polsko-angielski EXETER Copyright © http://www.kastor.strefa.pl.
                        acrostic
Praktyczny słownik religijny polsko-angielski 2005, Krzysztof Czekierda
                        liter. acrostic