cavity source

13 LETTERS · STARTS WITH C

cavity source is a valid 13-letter word worth 22 points in Scrabble and 25 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

C3A1V4I1T1Y4S1O1U1R1C3E1

3 + 1 + 4 + 1 + 1 + 4 + 0 + 1 + 1 + 1 + 1 + 3 + 1 =22 PTS

DOUBLE WORD → 44TRIPLE WORD → 66

MEANING

What does cavity source mean?