carriage coupling

17 LETTERS · STARTS WITH C

carriage coupling is a valid 17-letter word worth 24 points in Scrabble and 32 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3A1R1R1I1A1G2E1C3O1U1P3L1I1N1G2

3 + 1 + 1 + 1 + 1 + 1 + 2 + 1 + 0 + 3 + 1 + 1 + 3 + 1 + 1 + 1 + 2 =24 PTS

DOUBLE WORD → 48TRIPLE WORD → 72

MEANING

What does carriage coupling mean?