pearly nautilus
noun
1- a common nautilus of the IndoPacific, with a light spiral shell that is white with brownish bands on the outside and lined with mother-of-pearl on the inside鹦鹉螺。
1.1
- Nautilus pompilius, subclass Nautiloidea.拉丁名Nautilus pompilius, 鹦鹉螺亚纲。