do away with

VERB
12 LETTERS · STARTS WITH D

do away with is a valid 12-letter word worth 23 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
D2O1A1W4A1Y4W4I1T1H4
2 + 1 + 0 + 1 + 4 + 1 + 4 + 0 + 4 + 1 + 1 + 4 =23 PTS
DOUBLE WORD → 46TRIPLE WORD → 69
MEANING

What does do away with mean?