third sex

9 LETTERS · STARTS WITH T

third sex is a valid 9-letter word worth 19 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
T1H4I1R1D2S1E1X8
1 + 4 + 1 + 1 + 2 + 0 + 1 + 1 + 8 =19 PTS
DOUBLE WORD → 38TRIPLE WORD → 57
MEANING

What does third sex mean?

1