arc column

10 LETTERS · STARTS WITH A

arc column is a valid 10-letter word worth 15 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

A1R1C3C3O1L1U1M3N1

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

DOUBLE WORD → 30TRIPLE WORD → 45

MEANING

What does arc column mean?