for which

9 LETTERS · STARTS WITH F

for which is a valid 9-letter word worth 22 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
F4O1R1W4H4I1C3H4
4 + 1 + 1 + 0 + 4 + 4 + 1 + 3 + 4 =22 PTS
DOUBLE WORD → 44TRIPLE WORD → 66
MEANING

What does for which mean?

1