What does "Khairn" stand for?

What does it not stand for? ;-)

No, serious:
The label stands for two terms that characterize the qualities of this piece of software.

As the core (german Kern) of a project, Khairn contains all you need to achieve your project's aims.

At the same time, Khairn will be your cairn (a hiking trail signpost made of stones), providing you with fitting processes and structures.