roller chain

12 LETTERS · STARTS WITH R

roller chain is a valid 12-letter word worth 16 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1O1L1L1E1R1C3H4A1I1N1

1 + 1 + 1 + 1 + 1 + 1 + 0 + 3 + 4 + 1 + 1 + 1 =16 PTS

DOUBLE WORD → 32TRIPLE WORD → 48

MEANING

What does roller chain mean?