gridiron drainage

17 LETTERS · STARTS WITH G

gridiron drainage is a valid 17-letter word worth 20 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

G2R1I1D2I1R1O1N1D2R1A1I1N1A1G2E1

2 + 1 + 1 + 2 + 1 + 1 + 1 + 1 + 0 + 2 + 1 + 1 + 1 + 1 + 1 + 2 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does gridiron drainage mean?