latchstring
/ˈlætʃˌstrɪŋ/
noun
- A string attached to a door latch that can be pulled from outside to open the door; often used figuratively to mean a welcome or invitation.
- The old inn still has a latchstring hanging by the front door.
- In pioneer days, the latchstring was left out to show visitors they were welcome.
- They always keep the latchstring out for friends who want to stop by.