What does ZIPS stand for? 

Zips

Zips (also Siggies or Geeps) is a slang term in the United States that was especially in use in the early 20th century. It was often used as a derogatory slur by Italian American and Sicilian American mobsters in reference to newer immigrant Sicilian and Italian mafiosi. The mobsters in the US were said to have difficulty understanding the Sicilian dialects of the new immigrants, in which words appeared to "zip" by. Other theories include pejorative uses, such as Sicilians' preference for homemade zip guns. According to another theory, the term is a contraction of a Sicilian slang term for "hicks" or "primitives". The older Sicilian mafiosi of the pre-Prohibition era, known as "Mustache Petes", were also referred to as "zips". They were deposed by American-born mobsters during the Castellammarese War.

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