Thanks for the suggestion Canuck .
Me thinks that if
http://www.englishirishdictionary.com were to do that they would start with
http://www.irishgaelictranslator.com ;-)
However, it is an intriguing idea.
If anyone knows of a good open source dictionary database server (I've taken a look at PHPDictionary), please let me know.
Caoimhín