1. 
   PERV
   PERV: Acronym for the porcine endogenous retrovirus, a pig virus that splices into DNA. PERV belongs to the same class of viruses as the human immunodeficiency virus (HIV). Some of the concern about pig-to-human transplantation revolves around PERV.
   Found op http://www.medterms.com/script/main/art.html?articlekey=11297
   
   
2. 
   Perv
   Perv is Australian slang for an erotic glance or look.
   Found op http://www.probertencyclopaedia.com/browse/ZP.HTM
   
   
3. 
   Perv
   Perv is Australian slang for an erotic glance or look.
   Found op http://www.probertencyclopaedia.com/browse/ZP.HTM
   
   
4. 
   perv
   1) Sicko
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/perv/1
   
   

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