witches' broth

NOUN
14 LETTERS · STARTS WITH W

witches' broth is a valid 14-letter word worth 25 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
W4I1T1C3H4E1S1'0B3R1O1T1H4
4 + 1 + 1 + 3 + 4 + 1 + 1 + 0 + 0 + 3 + 1 + 1 + 1 + 4 =25 PTS
DOUBLE WORD → 50TRIPLE WORD → 75
MEANING

What does witches' broth mean?