This is the 2461st most frequent Polish word.
drugą
"Drugą" means "second" (feminine, accusative/instrumental form) in English.
Here, 'drugą' is used as the feminine instrumental singular form of 'drugi' (second) to modify 'ulicą' (street). This indicates the ordinal number 'second' in describing which street is being referred to.
Idę drugą ulicą obok parku.
I am walking along the second street next to the park.
In this sentence, 'drugą' is used as the feminine accusative singular form of 'drugi' (second) and functions as a pronoun replacing the noun 'book'. It indicates ordinality and continuation in referencing items.
Przeczytałem tę książkę, teraz zaczynam drugą.
I have read that book, now I am starting the second one.
Here, 'drugą' is used in an idiomatic expression ('druga strona medalu'), meaning 'the other side', transforming 'drugi' to signify an alternative viewpoint and modifying 'stronę' in the accusative case.