rubbing block

13 LETTERS · STARTS WITH R

rubbing block is a valid 13-letter word worth 25 points in Scrabble and 33 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

R1U1B3B3I1N1G2B3L1O1C3K5

1 + 1 + 3 + 3 + 1 + 1 + 2 + 0 + 3 + 1 + 1 + 3 + 5 =25 PTS

DOUBLE WORD → 50TRIPLE WORD → 75

MEANING

What does rubbing block mean?