mSlovnik is the best double-sided multilingual dictionary for Mac OS. Translates without an Internet connection into 4 languages: English, German, French and Spanish.
Integrates Bing Translator Service via which enables the translation of whole sentences, or words not in the database. This feature, however, requires an Internet connection. Such translations can be found save for later off-line use..
Allows you to look up word definition from Spanish to English and vice versa.
