Egg″shell′ (?), n. 1. The shell or exterior covering of an egg. Also used figuratively for anything resembling an eggshell.
2. (Zoöl.) A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form.
Webster's Dictionary 1913
Egg″shell′ (?), n. 1. The shell or exterior covering of an egg. Also used figuratively for anything resembling an eggshell.
2. (Zoöl.) A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form.