Palinurus

n. device for directly obtaining the true bearing of the sun and the variation of the compass; family of lobsters of arthropods

Palinurus, in Roman mythology is the helmsman of a ship of the adventurer Aeneas, whose descendants would one day found the city of Rome. As the price for the safe passage of Aeneas and his people after fleeing from Troy to Italy to escape the devastation of Troy by the Greeks during their victory in the Trojan War, Venus, the mother of Aeneas, offers to Neptune, god of the sea, the death of Palinurus. Somnus causes Palinurus to fall asleep and fall overboard. He is then stranded on the coast of Lucania, in southern Italy, where he is killed by a native tribe, the Lucani. When Aeneas meets Palinurus in the Underworld, he agrees to provide the helmsman's body a proper burial, at what is now Cape Palinuro.
See more at Wikipedia.org...

Noun
1. type genus of the family Palinuridae
(synonym) genus Palinurus
(hypernym) arthropod genus
(member-holonym) Palinuridae, family Palinuridae
(member-meronym) spiny lobster, langouste, rock lobster, crawfish, crayfish, sea crawfish

n. Palinurus Vulgaris, type of crab living in fresh water; Palinurus

(n.)
An instrument for obtaining directly, without calculation, the true bearing of the sun, and thence the variation of the compass