This is the 10293rd most frequent German word.
postern
"Postern" in German means "to post or put up (a notice or advertisement)."
Here, 'postern' describes 'Treppe' as a secondary or hidden staircase.
Die postern Treppe führte zu einem geheimen Zimmer.
The postern staircase led to a secret room.
The word 'postern' here is used as an adjective describing the door as a back or secondary entrance.
Er musste die postern Tür benutzen, um den Durchgang zu passieren.
He had to use the postern door to pass through.
The word 'postern' is employed as an adjective to modify 'Mauer', referring to a secluded or less noticeable wall.