Definitions for ostraconˈɒs trəˌkɒn; -kə
Random House Webster's College Dictionary
os•tra•conˈɒs trəˌkɒn; -kə(n.)(pl.)-ca or -ka
(in ancient Greece) a potsherd, esp. one used as a ballot on which the name of a person voted to be ostracized was inscribed.
Category: Ancient History, Archaeology
Origin of ostracon:
1880–85; < Gk óstrakon; see ostracize
A piece of pottery or stone, usually broken off from a vase or other earthenware vessel.