lubber's mark

NOUN
13 LETTERS · STARTS WITH L

lubber's mark is a valid 13-letter word worth 21 points in Scrabble and 26 points in Words with Friends.

SCRABBLE WORDS WITH FRIENDS
L1U1B3B3E1R1'0S1M3A1R1K5
1 + 1 + 3 + 3 + 1 + 1 + 0 + 1 + 0 + 3 + 1 + 1 + 5 =21 PTS
DOUBLE WORD → 42TRIPLE WORD → 63
MEANING

What does lubber's mark mean?

NOUN · 1 SENSE
1

A fixed line on a ship's compass indicating its heading.