Answer: posterns

AnswerCrossword Clue
POSTERNSOld-time back doors.
POSTERNSSide entrances
POSTERNSBack gates
POSTERNSBack doors
POSTERNSRear gates of castles
posternsback door or gate
posternsof, pertaining to, or resembling a postern
posternsPOSTERN, a rear door or gate
posternsprivate entrance or any entrance other than the main one