O / ostrăcĭas
pronoun greek

ostrăcĭas

fem. ae · neut. ĭdis · gender masculine
and , , = οστρακίας, ὀστρακῖτις
a semigem; hornstone; chalcedony
a semigem, prob. hornstone or chalcedony, Plin. 37, 10, 65, § 177.