Pe*lo"rus (?), n. [After Pelorus, said to have been Hannibal's pilot when he left Italy.] (Navig.) An instrument similar to a mariner's compass, but without magnetic needles, and having two sight vanes by which bearings are taken, esp. such as cannot be taken by the compass.

Pe*lo"rus (?), n. [After Pelorus, said to have been Hannibal's pilot when he left Italy.] (Navig.) An instrument similar to a mariner's compass, but without magnetic needles, and having two sight vanes by which bearings are taken, esp. such as cannot be taken by the compass.