early warning system

NOUN
20 LETTERS · STARTS WITH E

early warning system is a valid 20-letter word worth 30 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
E1A1R1L1Y4W4A1R1N1I1N1G2S1Y4S1T1E1M3
1 + 1 + 1 + 1 + 4 + 0 + 4 + 1 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 4 + 1 + 1 + 1 + 3 =30 PTS
DOUBLE WORD → 60TRIPLE WORD → 90
MEANING

What does early warning system mean?

NOUN · 1 SENSE
1

A network of radar installations designed to detect enemy missiles or aircraft while there is still time to intercept them.