spline joint

12 LETTERS · STARTS WITH S

spline joint is a valid 12-letter word worth 20 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1P3L1I1N1E1J8O1I1N1T1

1 + 3 + 1 + 1 + 1 + 1 + 0 + 8 + 1 + 1 + 1 + 1 =20 PTS

DOUBLE WORD → 40TRIPLE WORD → 60

MEANING

What does spline joint mean?