side-valve engine

17 LETTERS · STARTS WITH S

side-valve engine is a valid 17-letter word worth 23 points in Scrabble and 29 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1I1D2E1-0V4A1L1V4E1E1N1G2I1N1E1

1 + 1 + 2 + 1 + 0 + 4 + 1 + 1 + 4 + 1 + 0 + 1 + 1 + 2 + 1 + 1 + 1 =23 PTS

DOUBLE WORD → 46TRIPLE WORD → 69

MEANING

What does side-valve engine mean?