line of defense

NOUN
15 LETTERS · STARTS WITH L

line of defense is a valid 15-letter word worth 20 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
L1I1N1E1O1F4D2E1F4E1N1S1E1
1 + 1 + 1 + 1 + 0 + 1 + 4 + 0 + 2 + 1 + 4 + 1 + 1 + 1 + 1 =20 PTS
DOUBLE WORD → 40TRIPLE WORD → 60
MEANING

What does line of defense mean?

NOUN · 1 SENSE
1

Defensive structure consisting of a barrier that can be employed for defense against attack.