stop clause

11 LETTERS · STARTS WITH S

stop clause is a valid 11-letter word worth 14 points in Scrabble and 18 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1T1O1P3C3L1A1U1S1E1

1 + 1 + 1 + 3 + 0 + 3 + 1 + 1 + 1 + 1 + 1 =14 PTS

DOUBLE WORD → 28TRIPLE WORD → 42

MEANING

What does stop clause mean?