Meanings

(coal) cinders

empty shell

shoulder blade

ostracism

used tea leaves

shell

auricle

red iron oxide

apex of a shell

to close up like an oyster

Crustacea

remnants of a bean plant

conchoidal fracture

cupule

shell structure

(theory of) isostasy

adductor muscle (of a bivalve)

shelling (e.g. of eggs, nuts, crabs and such)

cottony cushion scale (species of scale insect, Icerya purchasi)

coconut shell