clock error

11 LETTERS · STARTS WITH C

clock error is a valid 11-letter word worth 18 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3L1O1C3K5E1R1R1O1R1

3 + 1 + 1 + 3 + 5 + 0 + 1 + 1 + 1 + 1 + 1 =18 PTS

DOUBLE WORD → 36TRIPLE WORD → 54

MEANING

What does clock error mean?