It doesn’t, sorry. It is a way to express Astonishment, like saying “Holy Fuck!” or something like that. It’s also used to intensify something you say, “Naguará 'e grande es ese árbol = How fucking big is that tree”.

(Although I’m using “fuck” in the examples, Naguará isn’t a “rude word” or an insult, colloquial at most, you wouldn’t say naguará in a business meeting or a thesis defense, for example. Is just that i can’t think of other English word with the same weight as Naguará)

https://www.urbandictionary.com/define.php?term=Naguara

Slang originally from Barqusimeto, Venezuela, meaning “wow.”

Also spelled “Na guara,” “naguará,” or “na guará.” Town elders says it has to do with seing a flock of birds, now extint, called “guaros,” flying over the skies of Barquisimeto.