egg case

noun

1. Entomology. ootheca.
2. Entomology. egg sac.

egg case

1. A protective capsule of certain animals, such as insects and mollusks, that contains eggs.
2. See egg sac

Word History and Origins

Origin of egg case¹

First recorded in 1840–50

Example Sentences

The size of this egg-case depends on the size of the species, ranging from three to about eight inches in length.

From Project Gutenberg

How the cockroach deposits its egg-case; a study in insect behavior.

From Project Gutenberg

A similar structure, as the egg-case of spiders, earthworms, etc.

From Project Gutenberg

This egg case is often known as the "mermaid collar," on account of its striking resemblance to a collar.

From Project Gutenberg

The wasp tried to oviposit into the egg case but was upset and pursued by the cockroach.

From Project Gutenberg