egg-shell
From LSJ
Μισῶ σοφιστήν, ὅστις οὐχ αὑτῷ σοφός → Odi professum sapere, qui sibi non sapit → Den Weisen hass' ich, der in eigner Sache Tor
subs.
Ar. λεπίς, ἡ, V. ὄστρακος τό (Aesch., Frag.). A white egg-shell: V. τεῦχος νεοσσῶν λευκόν (Eur., Hel. 258).