Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun lubber's_line
1 sense of lubber's line
Sense 1
lubber's line, lubber line, lubber's mark, lubber's point -- (a fixed line on a ship's compass indicating its heading)
=> reference point, point of reference, reference -- (an indicator that orients you generally; "it is used as a reference for comparing the heating and the electrical energy involved")