What is the meaning of Piastre?

A Spanish or Spanish-American coin and unit of currency, originally worth eight real.

A form of currency formerly used in the French-speaking parts of Canada.

A form of currency formerly used in French Indochina.

A form of currency originally used in the Ottoman Empire.

A form of currency formerly used in Cyprus.

A form of currency currently used as a subunit in the Middle Eastern and East African countries of Egypt, Jordan (partly including Palestine), Lebanon, South Sudan, Sudan, and Syria.

A dollar.

piastre (one of several historical units of currency)

Canadian or American dollar

plural of piastra

Source: wiktionary.org