perpetuum mobile

16 LETTERS · STARTS WITH P

perpetuum mobile is a valid 16-letter word worth 25 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3E1R1P3E1T1U1U1M3M3O1B3I1L1E1

3 + 1 + 1 + 3 + 1 + 1 + 1 + 1 + 3 + 0 + 3 + 1 + 3 + 1 + 1 + 1 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does perpetuum mobile mean?