What does BRB mean?

BRB meaning in Chat Slang Dictionary

be straight back

BRB meaning in Etymology Dictionary

by 1996, Internet chat acronym for be right back.

BRB meaning in Computer Science Dictionary

Shorthand for Be Right Back, BRB is commonly used in chat rooms to let someone know that you are stepping away from the computer, but will return in a quick few minutes. Below is an example of how this would be used in chat.