GUEVA, in fact GUEVÁ, also written as WUEA, WUEVÁ, col. It the most common slang word in Chile. It means a stupidity, shit, something of no value, a nonsense. But it is used colloquially, mainly, as "a thing", anything. The origin of the word comes from HUEVO meaninf egg. Guevá stricty talking, means a lot of eggs.
Synonyms of gueva are huevada wuevá huevá stupidity
Used in Chile as well
"Whenever you hear Guevón (stupid, dumb, idiot) or Guevá you can be sure the person is a chilean. Pásame la guevá: means Give me that shit"