殻 - husk, nut shell

shell; husk; hull; pod; chaff

seashell; shell

cigarette end; cigarette butt; tobacco ashes

diastrophism (movement and deformation of the earth's crust)

(Earth's) crust

buckwheat chaff

scale insect

used tea leaves

to close up like an oyster; to retire into one's shell

Crustacea

chicken bones (e.g. for soup); chicken carcass

ice crust; ice rind; ice shell