prong box

9 LETTERS · STARTS WITH P

prong box is a valid 9-letter word worth 20 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3R1O1N1G2B3O1X8

3 + 1 + 1 + 1 + 2 + 0 + 3 + 1 + 8 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does prong box mean?