sexual desire

NOUN /sɛkʃuəl_dɪ'zaɪər/
13 LETTERS · STARTS WITH S

sexual desire is a valid 13-letter word worth 20 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1E1X8U1A1L1D2E1S1I1R1E1
1 + 1 + 8 + 1 + 1 + 1 + 0 + 2 + 1 + 1 + 1 + 1 + 1 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does sexual desire mean?