invisible shadow

16 LETTERS · STARTS WITH I

invisible shadow is a valid 16-letter word worth 27 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1N1V4I1S1I1B3L1E1S1H4A1D2O1W4

1 + 1 + 4 + 1 + 1 + 1 + 3 + 1 + 1 + 0 + 1 + 4 + 1 + 2 + 1 + 4 =27 PTS

DOUBLE WORD → 54TRIPLE WORD → 81

MEANING

What does invisible shadow mean?