post binder

11 LETTERS · STARTS WITH P

post binder is a valid 11-letter word worth 15 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3O1S1T1B3I1N1D2E1R1
3 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 2 + 1 + 1 =15 PTS
DOUBLE WORD → 30TRIPLE WORD → 45
MEANING

What does post binder mean?

1