This is the 1727th most frequent Polish word.
stali
"Stali" in Polish means "of steel" or "permanent," depending on context.
Here, 'stali' is the past tense, third person plural form of the verb 'stać,' which means 'to stand.'
Ludzie stali w kolejce po chleb.
People were standing in line for bread.
In this sentence, 'stali' is a noun in the genitive case form, referring to 'steel.'
Mamy solidne narzędzia ze stali.
We have durable tools made of steel.
'Stali' again acts as the past tense, third person plural form of the verb 'stać,' meaning 'to stand,' here in a more figurative sense.