This is the 17980th most frequent Polish word.
śmieć
"Śmieć" means "trash" or "rubbish" in English.
In this sentence, 'śmieć' is a verb and means to litter or to dirty, referring to not polluting the environment.
Nie wolno śmieć środowiska odpadami.
You must not litter the environment with waste.
Here, 'śmieć' is used as a noun meaning 'garbage' or 'waste,' referring to refuse or trash items.
Czy to śmieć na twoim trawniku?
Is that garbage on your lawn?
In this phrase, 'śmieć' is part of the verb 'śmieć' in its impersonal form, meaning 'dare,' expressing audacity or boldness.