plural system

13 LETTERS · STARTS WITH P

plural system is a valid 13-letter word worth 19 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3L1U1R1A1L1S1Y4S1T1E1M3
3 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =19 PTS
DOUBLE WORD → 38TRIPLE WORD → 57
MEANING

What does plural system mean?

1