dummy cartridge

15 LETTERS · STARTS WITH D

dummy cartridge is a valid 15-letter word worth 26 points in Scrabble and 30 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

D2U1M3M3Y4C3A1R1T1R1I1D2G2E1

2 + 1 + 3 + 3 + 4 + 0 + 3 + 1 + 1 + 1 + 1 + 1 + 2 + 2 + 1 =26 PTS

DOUBLE WORD → 52TRIPLE WORD → 78

MEANING

What does dummy cartridge mean?