random motion

13 LETTERS · STARTS WITH R

random motion is a valid 13-letter word worth 17 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1A1N1D2O1M3M3O1T1I1O1N1

1 + 1 + 1 + 2 + 1 + 3 + 0 + 3 + 1 + 1 + 1 + 1 + 1 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does random motion mean?