1. an earthen vessel , Lat. testa, (Aristophanes Comicus)

2. a tile or potsherd , especially the tablet used in voting (see. ὀστρακίζω); (Plato Philosophus)

3. a sort of earthenware castanet , (Aristophanes Comicus)

4. the hard shell of testaceous animals , as snails, muscles, tortoises, (Homeric Hymns) (ML)