Was originally Drakens Blood, aka blood of dragons... I was going through a rough point in my life and used this as an explanation to me. Dragons being a symbol for strength, power, wisdom, wealth, etc. etc... blood being the driving factor of human exsistance and though it is not always seen on the surface it continues to well inside you and allow you to continue on.
It was then shortened to Drakane in most gameing ventures, and just dropped to drak on vent/chat so I leave it in one of the shortened forms to forgo the explanation (and sounds less emo).
Also I believe Drakenous or something is posessive form of dragon in Czech.. most of my fams. orgin