This is the 6104th most frequent Polish word.
ani
"Nor" or "neither."
The word 'ani' is used here as a conjunction to list options in a negative sense.
Nie chcę ani kawy, ani herbaty.
I don't want coffee or tea.
The word 'ani' expresses emphasis in a negative construction, indicating 'not even one' star.
Nie zobaczyłem ani jednej gwiazdy na niebie.
I didn't see a single star in the sky.
The word 'ani' operates as part of the 'ani... ani...' construction, used to connect two subjects neither of which is able to fulfill the statement.