A PEN PAL is someone with whom one exchanges letters, usually a friend or acquaintance from a different place. The crossword solutions for the term PEN PAL include SOW (3 letters), CELLMATE (8 letters), BOAR (4 letters), PORKER (6 letters), INK (3 letters), CON (3 letters), FELON (5 letters), INMATE (6 letters), PIG (3 letters), COB (3 letters), TRUSTEE (7 letters), and PRISONER (8 letters). These words all relate to the idea of a PEN PAL, as they are all terms associated with incarceration, such as cellmate, FELON, INMATE, PRISONER, and TRUSTEE.