We get many questions that ask the definition of a term. Now there was a very interesting debate in this question. They wanted to know what an sdk was. Some said (including me at first) that they should just google easy questions like that. But other pointed out that "no question is too noobish" and that if we have simple questions asked here, google will link to them.
A dictionary feature would be nice, just to look through the definitions of term as an easy to find mechanism. I would suggestion a tag, something like "definition" or "dictionary"
Its just an idea/possibility, it would have to be established and questions tagged for upkeep. Let us discuss :D