* A misspelling: There might be a similar word you're thinking of, like "microne" (referring to something extremely small) or "micon" (a possible shortened form of "microcosm").
* A word from another language: It could be a word from a different language that doesn't have a direct translation into English. If you can provide more context about where you encountered this word, it might be easier to figure out its meaning.
Could you please provide more information about where you saw "mikoni" used? This would help me understand the context and potentially give you a better answer.