ignition tube

13 LETTERS · STARTS WITH I

ignition tube is a valid 13-letter word worth 15 points in Scrabble and 20 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

I1G2N1I1T1I1O1N1T1U1B3E1

1 + 2 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 3 + 1 =15 PTS

DOUBLE WORD → 30TRIPLE WORD → 45

MEANING

What does ignition tube mean?