That’s not exactly what tantric means, no. I’m not sure that edging means that either. Note to whomever created this–you actually have to get a significant number of people to accept this terminology before it becomes a slang, much less a definition. That, plus the fact that you’re site/blog/whatever is ‘words from the edge,’ and the fact that you don’t know how to express a ‘d’ in a pronunciation guide tells me that you didn’t put much thought into this.