An incessantly spinning, exciteable and high-spirited phenomenon of nature. Typically found with arms outstretched and/or slightly inebriated and giggling. Mostly female.
1. (in reference to a group of boisterous young women): "There goes another group of Dis", or "There must be at least sixDis in that group!"
2. "(a) Di would definitely make this situation more unpredictable"