tail block

10 LETTERS · STARTS WITH T

tail block is a valid 10-letter word worth 17 points in Scrabble and 21 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

T1A1I1L1B3L1O1C3K5

1 + 1 + 1 + 1 + 0 + 3 + 1 + 1 + 3 + 5 =17 PTS

DOUBLE WORD → 34TRIPLE WORD → 51

MEANING

What does tail block mean?