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 insist on or emphasize something being said or commanded, often also stressing the speaker’s perception of its evidentness: bro, man, I say, I’m telling you, can’t you see

used to insist on an answer to or emphasize a question: on earth, the hell

used to intensify a preceding interjection

Source: wiktionary.org