lock seam

9 LETTERS · STARTS WITH L

lock seam is a valid 9-letter word worth 16 points in Scrabble and 19 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS

L1O1C3K5S1E1A1M3

1 + 1 + 3 + 5 + 0 + 1 + 1 + 1 + 3 =16 PTS

DOUBLE WORD → 32TRIPLE WORD → 48

MEANING

What does lock seam mean?