leave (something) (open/unlocked/untied/etc.)

When you "leave __ open", it means that you don't close it:

Hey! Who left the refrigerator open?

In the same way, when you don't close, lock, tie, wash, zip, finish, etc. something, you "leave it ___":

When we lived out in the country, we always left the door unlocked.

This phrase appears in these lessons: