This is the 17752nd most frequent Polish word.
zostawił
"Zostawił" means "he left" or "he abandoned."
Here, 'zostawił' denotes leaving something behind in a certain place.
Jan zostawił książkę na stole.
John left the book on the table.
In this instance, 'zostawił' refers to omitting an action of closing, therefore leaving open.
Ojciec zostawił drzwi otwarte.
The father left the door open.
Here, 'zostawił' is used to mean someone left behind a written or verbal message for another person.