http://www.engadget.com/2009/08/05/apples-new-low-censoring-a-dictionary/#continued
http://daringfireball.net/2009/08/ninjawords
http://daringfireball.net/2009/08/ninjawords
Apple censored an English dictionary.
A dictionary. A reference book. For words contained in all reasonable dictionaries. For words contained in dictionaries that are used every day in elementary school libraries and classrooms.
"We were rejected for objectionable content. They provided screenshots of the words '****' and '****' showing up in our dictionary's search results. What's interesting is that we spent a good deal of time making it so that you must type vulgar words in their entirety, and only then will we show you suggestions in the search results. For instance, if you type 'fuc', you will not see '****' as a suggestion. This is in contrast to all other dictionaries we're aware of on the App Store (including Dictionary.com's application), which will show you '****' in the search results for 'fuc', 'mother****er' for 'mother', etc."
In essence, you would have to already know the word in order to be able to look it up in the app -- your mind would have had to be already poisoned with the sinful idea.