1.NounAlternative form of bro (“male comrade or friend”).
2.InterjectionExpressing amazement or shock.
"You're moving to Greenland? Bruh!"
3.InterjectionExpressing a feeling that something is stupid, inappropriate, useless or even weird to say, think or do.
"Person 1: I poured canola oil into my car engine!Person 2: Bruh.; Person 1: I think the word partisan derives from how they parted their hair.Person 2: Bruh."
4.InterjectionExpressing disappointment.
"Person 1: Your favorite show got cancelled!Person 2: Bruh.; Person 1: I just ate your dinner.Person 2: Seriously, bruh."