Here the papyri and ostraca have put a large material .
(8) The ostraca, or rough notes of work accounts, and plans drawn on pieces of limestone or pottery.
The people met, not as usual in the Pnyx, but in the Agora, in the presence of the Archons, and recorded their votes by placing in urns small fragments of pottery (which in the ancient world served the purpose of waste-paper) (ostraca) on which they wrote the name of the person whom they wished to banish.
How would you define ostraca? Add your definition here.