"Rhinoplasty - a plastic credit or debit card that can be used at the zoo"
There are numerous categories to browse through and it looks and, surprisingly for a dictionary based title, sounds great too. This great free application can be downloaded via the iTunes Apps Store (you can find it in the Entertainment section of the store).
"Terminal illness - Being ill at the airport"
Unusual for an iPhone or iPod Touch application, there is a built-in form that allows users to submit their own definitions for inclusion in updated versions. All users who submit words and definitions that get used will get their names listed on a credits page in a forthcoming update.
In fact, there is already an update underway with more categories and words - and this and any future updates are free! Once you've download the "app" to your iPhone or iPod Touch you'll automatically get informed by Apple's update notification service that there is a free update waiting to be downloaded.
"Polygon - The result of leaving a bird cage open."
There really is no reason why you shouldn't go ahead and try this application out - it's free and it's going to make you laugh (or possibly even groan!) at some of the definitions. If you've liked the ones you've read so far you'll have to download the "app" to read some more!
"Mouse - An ergonomic input device that makes it easier for anyone to make mistakes on a computer."
Pricing and Availability:
Dictionary HaHa 1.0 for iPhone is completely free and available exclusively through Apple's App Store.