sensory system

NOUN
14 LETTERS · STARTS WITH S

sensory system is a valid 14-letter word worth 21 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1E1N1S1O1R1Y4S1Y4S1T1E1M3
1 + 1 + 1 + 1 + 1 + 1 + 4 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does sensory system mean?