double dummy

12 LETTERS · STARTS WITH D

double dummy is a valid 12-letter word worth 22 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

D2O1U1B3L1E1D2U1M3M3Y4

2 + 1 + 1 + 3 + 1 + 1 + 0 + 2 + 1 + 3 + 3 + 4 =22 PTS

DOUBLE WORD → 44TRIPLE WORD → 66

MEANING

What does double dummy mean?