A wall built of parpen stones; (hence) a wall one brick thick; any thin wall, especially an internal wall or partition. Also (Scottish): a parapet wall, especially of a bridge.
Origin
Late Middle English. From parpen + wall.
Definition of parpen wall in US English:
parpen wall
nounˌpɑːp(ɪ)n ˈwɔːl
English Regional, Scottish, Northern
A wall built of parpen stones; (hence) a wall one brick thick; any thin wall, especially an internal wall or partition. Also (Scottish): a parapet wall, especially of a bridge.