I am an english-speaking student. I am trying to find out what a number of transliterated arabic words mean in english, but I have had trouble because I cannot understand sites written in arabic. Does anyone know a good online arabic-english dictionary?

Dear Muslim Brother

Al salmo Alykom

Here is a good link that i hope it will help you.
Hope that you feel free to contact me if you need any help
http://www.emuslim.com
Quranic Dictionary by Sheikh Abdul Karim Parikh
Your brother in Islam
Mohamed Ali
Egypt