This is the 6403rd most frequent Polish word.
cos
"Coś" in Polish means "something" in English.
Here, 'coś' means 'something' and is used to refer to an indefinite additional information.
Czy możesz mi powiedzieć coś więcej o tej książce?
Can you tell me something more about this book?
In this sentence, 'coś' represents 'something' that is undefined or general.
Musimy przygotować coś do jedzenia na imprezę.
We need to prepare something to eat for the party.
Here, 'coś' indicates a specific but not mentioned item or information.