back line

9 LETTERS · STARTS WITH B

back line is a valid 9-letter word worth 16 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

B3A1C3K5L1I1N1E1

3 + 1 + 3 + 5 + 0 + 1 + 1 + 1 + 1 =16 PTS

DOUBLE WORD → 32TRIPLE WORD → 48

MEANING

What does back line mean?