A nice introduction to the work done in this project:
Words are weird. Here are some examples.
Radiolab: A nice illustration of English words with multiple meanings
Language Log: What exactly is a "potato chip"? And, a similar question: What's the difference between a cake and a biscuit?(Many thanks to Alexander Koller for the link!)
Language Log: Some concepts that, surprisingly, have something in common lexically
Language Log: Auto-antonyms, words that (also) mean the opposite of what they mean