Wordia is a site I only recently found through Twitter and I'm still exploring. I have high hopes for this site and it is currently working on a school version for users. The gist of the site is that it takes everyday words and gives you the standard dictionary definition. Next to the Standard Definition, there is a video of a person's view of the word, the connotation. The idea behind the British site is to make stronger connections to words beyond the standard definitions. The word Pitch is a great example of SD and Connotation. While the Lion is a bit goofy, the point is well made that there are words that have other meaning besides the SD.
The site has one vocabulary quiz game and a couple more on the horizon. It's always good to see more vocabulary games on the Internet. The more practice students can have with new words, they will become stronger readers and writers. The school version will help build those skills as well.