ec2-3-237-94-109.compute-1.amazonaws.com | ToothyWiki | RecentChanges | Login | Webcomic A 'word' made up of multiple CapitalisedWords without spaces. Usually. You can actually force (almost) anything to be a WikiWord by putting double square brackets around it. Try it on your Cat? when you get home, for example.
It'll appear as a word with a BlueQuestionMark after it, or as a hyperlink. If it's a question mark, then it's an UnreifiedLink - meaning no one has yet written a page about it. By that particular name, anyway: the search box or the lists of links may be useful for finding where the discussion actually is.
Otherwise, it'll go to more discussion which, with any luck, will be on the topic of the word.