Brotheratrix Share definition Flag A word to call a close friend, like "bro" or "mate." Only used by the most elite friend groups Guy 1: What's up brotheratrix! Guy 2: What's up gangilangitrong! Brotheratrix by misterchickensandwich August 13, 2024 0 0 Get merch Get the Brotheratrix mug. Buy Now — $32.95 See more merch