Originally Posted by international student
Add to the list "pianist" as well.....
Well, your best bet is to use an online dictionary that has a "pronunciation" feature come with it. Try Websters. It works really good.
Now, it's true that peanuts and penis sound very similar and there has been numerous jokes about it. Even at home when I was younger my siblings used to say "Want some penis butter with your toast?" Of course, we laugh at this now but kids and even adults still like to joke about it.
If you are in school, I would definitely make sure you make the "T" sound come as clear as a bell as the teacher wants to knows you are talking about a famous pianist and not a famous penis.
Try online dictionaries, that's my best bet.