shift lock

10 LETTERS · STARTS WITH S

shift lock is a valid 10-letter word worth 21 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1H4I1F4T1L1O1C3K5

1 + 4 + 1 + 4 + 1 + 0 + 1 + 1 + 3 + 5 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does shift lock mean?