Swissie

What Does Swissie Mean?
A slang term for the Swiss franc. The Swiss franc, or Swissie, has often been considered a safe-haven currency during times of geopolitical unrest. This is mainly due to the country's neutral stance in global conflicts.

Investopedia explains Swissie
For example, one may hear in a news report that the Swissie was down in today's trading. This is similar to the U.S., where the dollar is referred to as the "greenback", Canada, where the dollar is called a "loonie" and  New Zealand, where the dollar is called a "kiwi".