cap octavo

10 LETTERS · STARTS WITH C

cap octavo is a valid 10-letter word worth 18 points in Scrabble and 22 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3A1P3O1C3T1A1V4O1

3 + 1 + 3 + 0 + 1 + 3 + 1 + 1 + 4 + 1 =18 PTS

DOUBLE WORD → 36TRIPLE WORD → 54

MEANING

What does cap octavo mean?