sense of hearing

NOUN
16 LETTERS · STARTS WITH S

sense of hearing is a valid 16-letter word worth 21 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
S1E1N1S1E1O1F4H4E1A1R1I1N1G2
1 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 0 + 4 + 1 + 1 + 1 + 1 + 1 + 2 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does sense of hearing mean?