ground detector

15 LETTERS · STARTS WITH G

ground detector is a valid 15-letter word worth 19 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

G2R1O1U1N1D2D2E1T1E1C3T1O1R1

2 + 1 + 1 + 1 + 1 + 2 + 0 + 2 + 1 + 1 + 1 + 3 + 1 + 1 + 1 =19 PTS

DOUBLE WORD → 38TRIPLE WORD → 57

MEANING

What does ground detector mean?