Reinette means queen because it comes from the name Regina, "petit reine" is how you say "little queen" in French.
Reinette is also a type of apple and a tree frog (frog is also rainette in this case but Reinette is a popular frog character on a show). It is pronounced more like "reh NET" if that makes sense you can listen to it here
http://www.forvo.com/search/reinette/fr/