No way you could have missed it: if you google for "BlackBerry dictionary" you will certainly come straight on to us: www.beiks.com
Of course, you can also use the BlackBerry browser or a third-party browser to visit online dictionaries, but the only client dictionary source that I am aware of is Beiks.
All major world languages are covered, including English, Spanish, German, French and Italian dictionaries.
The dictionary content is coming from reliable vendors and constantly improved and the dictionary technology is based on the award-winning Beiks Dictionary reader, already in its sixth year on the mobile market.
BTW, creating a dictionary for BlackBerry proved to be quite a challenge.
Please ask us here or directly if you have any further questions.