This is the 13153rd most frequent Polish word.
ognisku
"At a bonfire" or "at a campfire."
The word "ognisku" is used in the locative case, indicating a location where the action is occurring.
Spotkaliśmy się wieczorem przy ognisku.
We met in the evening by the campfire.
Here, "ogniska" shows its function in the locative case, describing the location of the children's activity.
Dzieci siedziały wokół ogniska i śpiewały piosenki.
The children sat around the campfire and sang songs.
In this sentence, "ognisku" is used in the locative case, referring to the place where sausages are being roasted.