Definition of lubber's line in English:

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lubber's line

(also lubber line)


A line marked on the compass in a ship or aircraft, showing the direction straight ahead.
Example sentences
  • Adjustable compasses have a compass body with a lubber's line and a rotating capsule or bezel with a boxing mark.
  • Simple compasses may use north or 0º on the azimuth circle as a lubber's line.

For editors and proofreaders

Syllabification: lub·ber's line

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