nautilus
/ˈnɔːtɪləs/noun
(pl. nautiluses 或nautili /-laɪ/)
1
- a cephalopod mollusc with a light external spiral shell and numerous short tentacles around the mouth. Nautiluses swim with the buoyant gas-filled shell upright and descend to greater depths during the day.鹦鹉螺。
1.1
- Genus Nautilus, the only surviving genus of the subclass Nautiloidea: several species, in particular the pearly nautilus.鹦鹉螺属, 鹦鹉螺亚纲中仅存的属：数种, 尤指珍珠鹦鹉螺。
词源
modern Latin, from Latin, from Greek nautilos, literally 'sailor'.