Shabdanjali with StarDict
Here is a English-Hindi dictionary that you can install on the computer and do not need to be online to search meanings. It is a very good dictionary.
This dictionary is a combined package of StarDict (a free dictionary software under GPL) and Shabdajali. Shabdanjali has been developed by the Language Technology Research Center at Indian Institute of Information Technology in Hyderabad, India.
To download the StarDict source code (not applicable to most users), please see http://stardict.sourceforge.net.