The American Heritage® Dictionary of the English Language, 4th Edition
n. Any of various tropical marine gastropods of the family Cypraeidae, having glossy, often brightly marked shells, some of which are used as currency in the South Pacific and Africa.
n. A gastropod of the family Cypraeidae common to the Indian Ocean.
n. The pyriform shell, of the cowrie, especially of the species money cowry (Cypraea moneta), formerly used as money in some areas.
the GNU version of the Collaborative International Dictionary of English
n. Same as kauri.
n. A marine shell of the genus Cypræa.
The Century Dictionary and Cyclopedia
n. See cowry.
WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
n. any of numerous tropical marine gastropods of the genus Cypraea having highly polished usually brightly marked shells
Word Usage
"The first currency to be used this way was something called the cowrie shell, a seashell common in the Pacific and Indian oceans that was used for trading primarily in Africa and Asia."