Top Definition
The most difficult part of a task. Often used in climbing to describe the hardest move on the wall.
Dude the krux of that route was that killer roof at the top!
by skk October 08, 2006
2 more definitions
To be so loyal to a specific media information platform/program that you deny yourself informative/entertaining media formats not supported by said software.
I tried to show him that damn "My Chemical Romance" video but his Mozilla using ass was going all krux on me.
by U+V March 06, 2005
To prefer an internet browser to the point that you will refuse another browser that supports a media format/feature that your chosen browser will not.
I tried to show him that bad ass new "My Chemical Romance" video but that mozilla using bastard was straight Kruxing it.
by THCNET Crew March 05, 2005

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