This app allows you to define words by tapping on the word via a video stream, it works on paperback books, maybe printed documents, It uses this pseudo Augmented reality technique, saving you the trouble of typing the word into a conventional dictionary.

Usage/Promo Video : http://vimeo.com/jinahadam/meanings

Usage
* point the video stream on the page/printed document
* let it focus
* tap the word you want to define.
* if it fails or the text is inaccurate adjust the distance between the phone and the page/printed text.
* App will try to autocorrect word or suggest closest match if the processed word is not in the dictionary.

Disclaimer
This app uses, Image Processing/OCR technologies, the result may not be always accurate, especially if the font is not a standard font. Its optimised to work on paperback books