egg sac

noun

1. a silken case or capsule containing eggs of a female spider.

egg sac

1. The silken pouch in which many spiders deposit their eggs.
2. Also called egg case

Example Sentences

One egg sac can carry hundreds of eggs.

From Salon

It can also spread when the spiderlings first hatch from the egg sac.

From Washington Post

Like the praying mantis who's male through the whole thing, and then has this egg sac, but Mom and I still call it "he."

From Salon

A striped fishing spider spinning an egg sac was among the winners in the Wildlife Photographer of the Year photo competition sponsored by the Natural History Museum in London.

From Science Magazine

This fishing spider is stretching out silk from its spinnerets to weave into its egg sac.

From BBC