logical fallacy

NOUN
15 LETTERS · STARTS WITH L

logical fallacy is a valid 15-letter word worth 25 points in Scrabble and 31 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
L1O1G2I1C3A1L1F4A1L1L1A1C3Y4
1 + 1 + 2 + 1 + 3 + 1 + 1 + 0 + 4 + 1 + 1 + 1 + 1 + 3 + 4 =25 PTS
DOUBLE WORD → 50TRIPLE WORD → 75
MEANING

What does logical fallacy mean?