This is the 2012th most frequent Polish word.
grilla
The Polish word "grilla" refers to a "barbecue" or "grill" (outdoor cooking device or event).
Here, 'grilla' refers to the device used for cooking, specifically indicating its purpose.
Przygotowaliśmy warzywa na grilla.
We prepared vegetables for the grill.
In this sentence, 'grilla' denotes a social gathering based around grilling food.
Zaprosiłem sąsiadów na grilla w sobotę.
I invited the neighbors to a grill party on Saturday.
The word 'grilla' here means the physical grill item to be brought along.