friction layer

14 LETTERS · STARTS WITH F

friction layer is a valid 14-letter word worth 21 points in Scrabble and 23 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

F4R1I1C3T1I1O1N1L1A1Y4E1R1

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

DOUBLE WORD → 42TRIPLE WORD → 63

MEANING

What does friction layer mean?