joint runner

12 LETTERS · STARTS WITH J

joint runner is a valid 12-letter word worth 18 points in Scrabble and 24 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
J8O1I1N1T1R1U1N1N1E1R1
8 + 1 + 1 + 1 + 1 + 0 + 1 + 1 + 1 + 1 + 1 + 1 =18 PTS
DOUBLE WORD → 36TRIPLE WORD → 54
MEANING

What does joint runner mean?

1