collision bulkhead

18 LETTERS · STARTS WITH C

collision bulkhead is a valid 18-letter word worth 29 points in Scrabble and 35 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3O1L1L1I1S1I1O1N1B3U1L1K5H4E1A1D2

3 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 5 + 4 + 1 + 1 + 2 =29 PTS

DOUBLE WORD → 58TRIPLE WORD → 87

MEANING

What does collision bulkhead mean?