What is the meaning of Eggshell?

The shell around an egg.

A pale off-white colour, like that of the eggshell.

Of a pale yellowish-whitish colour, like that of the eggshell.

Exhibiting the thinness, translucency or near-transparency, and fragility of an eggshell.

Very matt, having a low reflexivity, like an eggshell.

Source: wiktionary.org