valve line

10 LETTERS · STARTS WITH V

valve line is a valid 10-letter word worth 15 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

V4A1L1V4E1L1I1N1E1

4 + 1 + 1 + 4 + 1 + 0 + 1 + 1 + 1 + 1 =15 PTS

DOUBLE WORD → 30TRIPLE WORD → 45

MEANING

What does valve line mean?