This is the 4366th most frequent Polish word.
gwizdkiem
The Polish word "gwizdkiem" means "with a whistle" or "by a whistle."
Here, 'gwizdkiem' (a whistle) is a noun used in the instrumental case, indicating the means by which the action was accomplished.
Sędzia zakończył mecz gwizdkiem.
The referee ended the match with a whistle.
In this sentence, 'gwizdkiem' is used metaphorically to describe an object resembling a whistle.
Kucharz podał zupę z gwizdkiem.
The chef served soup with a whistle-shaped lid.
Here, 'gwizdkiem' refers to the tool (a whistle) used for creating sound in a specific action.