local anesthetic

NOUN /loʊkəl_,ænɪs'θɛtɪk/
16 LETTERS · STARTS WITH L

local anesthetic is a valid 16-letter word worth 22 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
L1O1C3A1L1A1N1E1S1T1H4E1T1I1C3
1 + 1 + 3 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 4 + 1 + 1 + 1 + 3 =22 PTS
DOUBLE WORD → 44TRIPLE WORD → 66
MEANING

What does local anesthetic mean?