partition line

14 LETTERS · STARTS WITH P

partition line is a valid 14-letter word worth 15 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3A1R1T1I1T1I1O1N1L1I1N1E1
3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 =15 PTS
DOUBLE WORD → 30TRIPLE WORD → 45
MEANING

What does partition line mean?

1