knife file

10 LETTERS · STARTS WITH K

knife file is a valid 10-letter word worth 19 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

K5N1I1F4E1F4I1L1E1

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

DOUBLE WORD → 38TRIPLE WORD → 57

MEANING

What does knife file mean?