purpose clause

14 LETTERS · STARTS WITH P

purpose clause is a valid 14-letter word worth 19 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
P3U1R1P3O1S1E1C3L1A1U1S1E1
3 + 1 + 1 + 3 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 1 + 1 =19 PTS
DOUBLE WORD → 38TRIPLE WORD → 57
MEANING

What does purpose clause mean?

1