Google has pushed out a major upgrade to their definitions user interface, adding an expandable box with synonyms, ways to use the word in sentences, the origins of the word, translation, use over time and more.

Google announced this on Google+ and here is a screen capture:

Note, when you try to translate the word, future definition searches will consistently provide a translation to that same language.

It is a shame they stopped linking to the major dictionary sites still.

Forum discussion at Google+.