loose thread

12 LETTERS · STARTS WITH L

loose thread is a valid 12-letter word worth 15 points in Scrabble and 15 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

L1O1O1S1E1T1H4R1E1A1D2

1 + 1 + 1 + 1 + 1 + 0 + 1 + 4 + 1 + 1 + 1 + 2 =15 PTS

DOUBLE WORD → 30TRIPLE WORD → 45

MEANING

What does loose thread mean?