blind stamping

14 LETTERS · STARTS WITH B

blind stamping is a valid 14-letter word worth 21 points in Scrabble and 28 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

B3L1I1N1D2S1T1A1M3P3I1N1G2

3 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 1 + 3 + 3 + 1 + 1 + 2 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does blind stamping mean?