post quarto

11 LETTERS · STARTS WITH P

post quarto is a valid 11-letter word worth 21 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3O1S1T1Q10U1A1R1T1O1

3 + 1 + 1 + 1 + 0 + 10 + 1 + 1 + 1 + 1 + 1 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does post quarto mean?