To answer your question, I need more information! Tell me:
* Are you talking about a specific monkey you know? If so, what are some details about this monkey (its species, where you saw it, etc.)?
* Are you asking about a famous monkey? If so, do you have any details about what it's known for?
* Are you just looking for a general name for a monkey? In this case, I could tell you some common names like "Koko" or "Chee-Chee".
Let me know!