The same principles as for word frequency lists should apply here. The set of words in a copyrighted work is a fact, not itself a copyrightable work.
As long as you write your own definitions and you comply with the laws around nominative use of trademarks (i.e. make it clear enough that your product is not from the makers of Who Made Me a Princess), I can't see what your problem would be.
That isn't to say that the people who own the original work won't send you angry letters or send your hosting services DMCA requests or the local equivalent.