sick person

NOUN /sɪk_'pɜrsən/
11 LETTERS · STARTS WITH S

sick person is a valid 11-letter word worth 18 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1I1C3K5P3E1R1S1O1N1
1 + 1 + 3 + 5 + 0 + 3 + 1 + 1 + 1 + 1 + 1 =18 PTS
DOUBLE WORD → 36TRIPLE WORD → 54
MEANING

What does sick person mean?