1. eggshell - Noun
2. eggshell - Adjective
The shell or exterior covering of an egg. Also used figuratively for anything resembling an eggshell.
A smooth, white, marine, gastropod shell of the genus Ovulum, resembling an egg in form.
Source: Webster's dictionaryWhat they had between them was still as fragile as a flickering candle flame, as delicate as eggshell - and he knew that if it shattered, if he somehow let it break and be destroyed, something inside him would shatter too, something that could never be fixed. Cassandra Clare
Hope can be the most wonderful thing in the world or it can crush your heart like an eggshell. Harlan Coben
A hero without faults is like an omelet without little bits of eggshell in it. Colin Cotterill
The eggshell cannot be a mother of its resultant offspring. African Proverb
Accordingly, it is exceptionally valuable for bathrooms, furniture, and kitchens, but it is shinier than eggshell, so it is even more prone to show imperfections. Source: Internet
"A Howiesons Poort tradition of engraving ostrich eggshell containers dated to 60,000 years ago at Diepkloof Rock Shelter, South Africa". Source: Internet