The BeoLingus German-English Dictionary Plugin (formerly Wörterbuch Deutsch-Englisch) extends Apple’s Dictionary application (Dictionary.app) with a German-English dictionary.
The dictionary content is based on the online dictionary www.beolingus.de by TU Chemnitz.

What’s new in this version:

Version 08.03.14:

• Similar search results are shown combined again. Eg. ‘Wörterbuch’ shows three matching results instead of one.

Version 08.03.13:

• The search results show now direct matches at the top of the results. Eg. ‘physicist’ won’t match ‘atomic physicist’ as the first result.
• Version numbering now follows Apple’s guidelines
• Renamed the Dictionary plugin
• Hopefully fixed the install problems

Website
Download BeoLingus German-English Dictionary Plugin