‘be right back’의 줄임말로, 채팅이나 문자 메시지에서 잠시 자리를 비웠다가 곧 돌아오겠다는 뜻으로 쓰임.
An abbreviation for 'be right back', used in text messages and online chats to indicate a brief absence.
예문:
"Someone is at the door, brb."
"I need to grab a glass of water, brb!"
"BRB, my phone is ringing."