cur·ren·cy (kûrn-s, kr-)
n. pl. cur·ren·cies
1. Money in any form when in actual use as a medium of exchange, especially circulating paper money.
2. Transmission from person to person as a medium of exchange; circulation: coins now in currency.
3. General acceptance or use; prevalence: the currency of a slang term.
4. The state of being current; up-to-dateness: Can you check the currency of this address?http://www.thefreedictionary.com/currency
Definition of 'Currency'
A generally accepted form of money, including coins and paper notes, which is issued by a government and circulated within an economy. Used as a medium of exchange for goods and services, currency is the basis for trade. Generally speaking, each country has its own currency.
For example, Switzerland's official currency is the Swiss franc, and Japan's official currency is the yen. (…)http://www.investopedia.com/terms/c/currency.asp