Adj.
That which is suitable for royalty or someone deserving of a crown. Something highly desirable, of quality or of fine origin. Typically, anything that is [the shit], [the bomb], [killer], [dope], etc.
> I converted my Benz to [bio] and got a new sound system -- now my shit is crowny!
> That local family farm is so awesome! Their goat cheese is the crowny [organies]!
> Question:What's this [shit] like?
> Answer: It's crowny, son.