spline clutch

13 LETTERS · STARTS WITH S

spline clutch is a valid 13-letter word worth 21 points in Scrabble and 27 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

S1P3L1I1N1E1C3L1U1T1C3H4

1 + 3 + 1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 1 + 3 + 4 =21 PTS

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does spline clutch mean?