This is the 4286th most frequent Polish word.
dziesiątej
The Polish word "dziesiątej" means "tenth" or refers to "ten o'clock" (in the context of time).
In this sentence, "dziesiątej" is used to indicate the time, specifically ten o'clock, in a locative case used with preposition "o" for times.
Zaczynam pracę o godzinie dziesiątej.
I start work at ten o'clock.
Here, "dziesiątej" is a feminine ordinal number used in the genitive case to describe the noun "próba" (attempt).
To jest moja dziesiątej próba rozwiązania problemu.
This is my tenth attempt to solve the problem.
In this instance, "dziesiątej" is again an ordinal number used as an attribute to the noun "ulicy" (street), agreeing with it in the feminine locative case.