Find-A-Word
Find a word which uses all of your letters
Provide a list of letters (or a word) and get back any words which use some or all of the letters. To find the word "cattle", you would have to provide two letter t's in your list of letters. You can also limit the results to words of a minimum length so short words like "a" and "an" can be eliminated.
These results are particularly suitable for creating acronyms and transforming words. It does not find "anagrams", as those can be multiple words. Note: this also works particularly well for getting unstuck while finding the longest word(s) in the free Every Word game on the Amazon Kindle, as well as other word games. Enjoy!
Feb 2, 2011: I've added a new feature! You can now click on a word to see its definition on Merriam-Webster's website.