power source

12 LETTERS · STARTS WITH P

power source is a valid 12-letter word worth 18 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

P3O1W4E1R1S1O1U1R1C3E1

3 + 1 + 4 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 3 + 1 =18 PTS

DOUBLE WORD → 36TRIPLE WORD → 54

MEANING

What does power source mean?