IPA: /ˈlæʧstrɪŋ/
KK: /ˈlæʧstrɪŋ/
A cord that is connected to a latch, allowing it to be lifted from outside a door.
He pulled the latchstring to open the door from the outside.
Latchstring → The word is formed from "latch" (from Old English *læccan*, meaning to catch or seize) and "string" (from Old English *streng*, meaning a cord or thread). A latchstring is a cord used to operate a latch, typically allowing a door to be opened or closed.
Think of a 'cord' ('string') that helps you 'catch' or 'seize' ('latch') a door — that's what a latchstring does.
No commonly confused words.