This is the 3526th most frequent Arabic word.
وترك
"وترك" means "and he left" or "and he abandoned."
In this sentence, 'وترك' is used to indicate that the man left something (the door) in a particular state when he left the house.
غادر الرجل المنزل وترك الباب مفتوحًا.
The man left the house and left the door open.
Here, 'وترك' is used to show that the child chose something (his favorite toy) while leaving another thing aside.
أخذ الطفل لعبته المحبوبة وترك الأخرى.
The child took his favorite toy and left the other.
In this example, 'وترك' implies that the guests left behind something (the table) in a specific state (clean) after finishing their dinner.