back file

9 LETTERS · STARTS WITH B

back file is a valid 9-letter word worth 19 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

B3A1C3K5F4I1L1E1

3 + 1 + 3 + 5 + 0 + 4 + 1 + 1 + 1 =19 PTS

DOUBLE WORD → 38TRIPLE WORD → 57

MEANING

What does back file mean?