hard currency in WordNet English dictionary

1. money in the form of bills or coins
   "there is a desperate shortage of hard cash"
   cash  hard cash  hard currency 
   
2. a currency that is not likely to depreciate suddenly in value
   "the countries agreed to conduct their bilateral trade in hard currency, replacing previous barter arrangements"; "Germany once had a solid economy, good fiscal and monetary policies, and a hard currency"
   hard currency