Regular correspondent (3-6)
'regular correspondent' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for pen pal that I've seen before include "friendly writer" , "American friend via correspondence" , "A friendly correspondent" , "Friend who communicates in writing" , "juvenile writer" .)
'regular correspondent' is the definition.
(I've seen this before)
This is all the clue.