What is the meaning of бре?

used for emphasis along with vocative appellations

used as an intensifier in expressive phrases

used to express aggression, impatience, fervor or similar emotions

used to intensify vocatives, conveying the emotions explained above

used to express passion about the point of a sentence, at any part of a sentence

similar to English fuck or hell, but not vulgar, e.g.:

hey

yo

Source: wiktionary.org