grain rust

10 LETTERS · STARTS WITH G

grain rust is a valid 10-letter word worth 10 points in Scrabble and 13 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

G2R1A1I1N1R1U1S1T1

2 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 =10 PTS

DOUBLE WORD → 20TRIPLE WORD → 30

MEANING

What does grain rust mean?