This is the 11956th most frequent Polish word.
kwadransie
"Kwadransie" means "quarter of an hour."
The term 'kwadransie' is used here in the locative case after the preposition 'za', indicating a time period in which an event will occur.
Spotkamy się za kwadransie.
We will meet in a quarter of an hour.
In this sentence, 'kwadransie' is used in a locative case preceeded by 'w', referring to the duration of time as a conceptual space within which an action occurs.
W kwadransie można zrobić więcej niż się wydaje.
In a quarter of an hour, one can do more than it seems.
Here, 'kwadransie' is also used in the locative case after 'w', indicating a specific subsequent time period during which the action will happen.