I'm surprised it's not yet in the dictionary.
Well, I guess, the dictionairy makers just don't want to overwork themselfes.
I mean, just think about how fucking big the explaination would be. It can be a noun, verb, adverb, adjective, it can have around 20 different moods with it, it cannot be regulary conjugated AND it doesn't even need a context.
This word must be the horror for every linguist out there xD
Not even the polish word "kurwa" is that complicated, and it too is a offense meaning many different things (like fuck, prostitute, etc) :'D