lubber line
Noun
1. a fixed line on a ship's compass indicating its heading
(synonym) lubber's line, lubber's mark, lubber's point
(hypernym) reference point, point of reference, reference
lubber's line
Noun
1. a fixed line on a ship's compass indicating its heading
(synonym) lubber line, lubber's mark, lubber's point
(hypernym) reference point, point of reference, reference