small letter, lowercase letter = mała litera

Gothic Small Letters.

Source: http://www.fromoldbooks.org/Brown-LettersAndLettering/pages/142-Italian-Round-Gothic-Small-Letters-16th-Century/855x1319-q85.html

mała litera

English sentence and Polish translation

In webpage addresses we use only small letters. = W adresach stron WWW używamy tylko małych liter.