ASA,
Below is a link to the multi-lingual (English/Urdu/Bengali) dictionary of the Qur'aan.
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"The Easy Dictionary of the Qur’aan
It presents the meanings of the Arabic words of the Qur’aan in the order of their occurrence. The internet version alows you to print out, view on computer screen in office or at home. When you take a break, just start memorizing the words of those Surahs you plan to study or review words of those Surahs which you have covered so far.
Only 2,000 distinct words in the Qur'aan!
As you will see from the statistics, the new words in each Parah[/Surah/Chapter] decreases drastically. In principle, if you take out the repeated words, the total number of words in Qur'aan may well be less than 2,000!!! Allah Subhanahu wa ta'aala has revealed His book which contains so few words. This is another miracle of the Qur'aan. These statistics should give you a strong push to go ahead and continue memorizing till the end of this book, inshaAllah."
http://www.emuslim.com/quran/lughat.asp