lubber's line
or lubber line
noun Navigation.
a vertical line on the forward inner side of the bowl of a fixed compass, used as a reference mark indicating the heading of a vessel.
Also called
lubber's mark,
lubber's point.
Origin of lubber's line
First recorded in 1855–65
Words nearby lubber's line
lubber,
lubber grasshopper,
lubber line,
lubber's hole,
lubber's knot,
lubber's line,
lubberly,
lubbock,
lube,
lubitsch,
lublin
British Dictionary definitions for lubber line
lubber line
noun
a mark on a ship's compass that designates the fore-and-aft axis of the vessel
Also called: lubber's line