ground tier

11 LETTERS · STARTS WITH G

ground tier is a valid 11-letter word worth 12 points in Scrabble and 15 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

G2R1O1U1N1D2T1I1E1R1

2 + 1 + 1 + 1 + 1 + 2 + 0 + 1 + 1 + 1 + 1 =12 PTS

DOUBLE WORD → 24TRIPLE WORD → 36

MEANING

What does ground tier mean?