This is the 4821st most frequent Polish word.
okienko
"Okienko" in English means "little window" or "small window."
In this context, 'okienko' refers to a free period of time between scheduled activities, often used in an academic setting.
Mam okienko między zajęciami.
I have a free period between classes.
Here, 'okienko' refers to a small window, such as one in a door, which allows visibility from one side to the other.
Przez to małe okienko w drzwiach widać, kto stoi na korytarzu.
Through the small window in the door, you can see who is standing in the hallway.
In this example, 'okienko' indicates a time slot or an available space for scheduling something.