PONS online dictionary
PONS Online Dictionary is a dictionary for 14 different languages and several language combinations. It also features text translation and a vocabulary trainer. The app is easy to use and free of charge. It is available for PCs and mobile phones.
You can find an introduction video here.
Information:
Main purpose: Resources to use in the classroom, Resources for learners
Languages: Most EU langauages
Available as: App for Android and Windows
Cost: Free