egg sac

noun
1.
a silken case or capsule containing eggs of a female spider.
Also called egg case.
Examples from the web for egg sac
  • As you get too big to fit inside, pretend to be an egg sac.
  • Eggs are also yellowish and laid in a cottony egg sac.
  • Newly hatched diamondback terrapin with egg sac and egg tooth.
egg sac in Science
egg sac  
The silken pouch in which many spiders deposit their eggs. Also called egg case.