eggshell
Egg"shell`, n. 1. The shell or exterior covering of an egg. Also used figuratively for anything resembling an eggshell. 2. (Zoöl.) Defn: A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form.
Egg"shell`, n. 1. The shell or exterior covering of an egg. Also used figuratively for anything resembling an eggshell. 2. (Zoöl.) Defn: A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form.