implements of war

NOUN
17 LETTERS · STARTS WITH I

implements of war is a valid 17-letter word worth 27 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
I1M3P3L1E1M3E1N1T1S1O1F4W4A1R1
1 + 3 + 3 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 0 + 4 + 1 + 1 =27 PTS
DOUBLE WORD → 54TRIPLE WORD → 81
MEANING

What does implements of war mean?