pe·lo·rus (p -lôr s, -l r-)n. pl. pe·lo·rus·es A fixed compass card on which bearings relative to a ship's heading are taken. [Origin unknown.] |
pelorus [pɪˈlɔːrəs]
n pl -ruses
(Mathematics & Measurements / Navigation) a sighting device used in conjunction with a magnetic compass or a gyrocompass for measuring the relative bearings of observed points
[of uncertain origin, perhaps from Latin Pelōrus a dangerous Sicilian promontory]
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