expression mark

15 LETTERS · STARTS WITH E

expression mark is a valid 15-letter word worth 29 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

E1X8P3R1E1S1S1I1O1N1M3A1R1K5

1 + 8 + 3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 5 =29 PTS

DOUBLE WORD → 58TRIPLE WORD → 87

MEANING

What does expression mark mean?