the world > animals > animal body > general parts > covering or skin > [noun] > hard or protective covering > shell of an egg or fish (4)
The calcareous or chitinous outer covering of crustaceans, molluscs, and other invertebrates.
The hard outer calcareous envelope of a bird's egg. (†in the shell, of an egg, boiled.) Also, the similar integument of the eggs of other…
The shell or external calcareous covering of an egg; often as a type of worthlessness or of fragility.
The shell of an egg or a shellfish. rare.