Afk is a term that came to be in the golden days of IRC, and is very popular today in the gaming culture. Looking for the definition of AFK? Find out what is the full meaning of AFK on onlinecasinoohneeinzahlung.net! 'Away From Keyboard' is one option -- get in to view more. This Slang page is designed to explain what the meaning of AFK is. The slang word / phrase / acronym AFK means . Online Slang Dictionary.