stop valve

10 LETTERS · STARTS WITH S

stop valve is a valid 10-letter word worth 17 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1T1O1P3V4A1L1V4E1

1 + 1 + 1 + 3 + 0 + 4 + 1 + 1 + 4 + 1 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does stop valve mean?