Cowrie

[kou-ree] /ˈkaʊ ri/

noun
1.
the highly polished, usually brightly colored shell of a marine gastropod of the genus Cypraea, as that of C. moneta (money cowrie) used as money in certain parts of Asia and Africa, or that of C. tigris, used for ornament.
2.
the gastropod itself.
/ˈkaʊrɪ/
noun (pl) -ries
1.
any marine gastropod mollusc of the mostly tropical family Cypraeidae, having a glossy brightly marked shell with an elongated opening
2.
the shell of any of these molluscs, esp the shell of Cypraea moneta (money cowry), used as money in parts of Africa and S Asia
n.

small shell, used as money in parts of Asia, 1660s, from Hindi and Urdu kauri, from Mahrati kavadi, from Sanskrit kaparda, perhaps related to Tamil kotu “shell.”