box string

10 LETTERS · STARTS WITH B

box string is a valid 10-letter word worth 19 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

B3O1X8S1T1R1I1N1G2

3 + 1 + 8 + 0 + 1 + 1 + 1 + 1 + 1 + 2 =19 PTS

DOUBLE WORD → 38TRIPLE WORD → 57

MEANING

What does box string mean?