1. Any of various marine mollusks of the class Polyplacophora that live on rocks and have shells consisting of eight overlapping calcareous plates. Also called sea cradle.2. A tunic worn by men and women in ancient Greece
{i} sleeveless gown worn by men and women of ancient Greece; marine mollusk with a shell composed of eight overlapping plates and large muscular foot for mobility (of the order Amphineura)
primitive elongated bilaterally symmetrical marine mollusk having a mantle covered with eight calcareous plates a woolen tunic worn by men and women in ancient Greece