white plague

NOUN /hwaɪt_pleɪɡ/
12 LETTERS · STARTS WITH W

white plague is a valid 12-letter word worth 20 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
W4H4I1T1E1P3L1A1G2U1E1
4 + 4 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 2 + 1 + 1 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does white plague mean?