In my eyes thats impossible,since ones reality is how they see life. I live my own reality, I don't let others try to make one for me.
It's rather ironic that a response that opens with saying it's impossible comes as close as any to actually defining it.
I guess it depends if you want a definition of a word, or what the word constitutes. I thought you'd want more than a simple definition of a word. But maybe I expect too much of some people.