Egg-case definitions

A protective capsule that contains eggs, produced by certain insects, mollusks, and elasmobranch fishes.
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A protective capsule that contains eggs, produced by certain insects, mollusks, and elasmobranch fishes.
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A protective capsule of certain animals, such as insects and mollusks, that contains eggs.
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A protective capsule that contains the eggs of some insects and molluscs.
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The leathery egg of certain marine animals such as sharks and skate.
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