StarDict is a Cross-Platform and international dictionary Software.
It has powerful features such as "Glob-style pattern matching", 
"Scan selection word," "Fuzzy query," etc. 
Stardict Version3.0 has developed a lot of new functions,
such as Full-text translation, Net Dict.

Thousands of free dictionaries can be found on the internet. 
Choose your own favorites.
Install Dictionaries in Linux:
To install these tarball dictionaries, do this:
tar -xjvf a.tar.bz2
mv a /usr/share/stardict/dic

some dictionary 
from http://stardict.sourceforge.net/Dictionaries.php :
	http://stardict.sourceforge.net/Dictionaries_misc.php
	http://stardict.sourceforge.net/Dictionaries_dictd-www.dict.org.php
	http://stardict.sourceforge.net/Dictionaries_WikiPedia.php
        http://stardict.sourceforge.net/Dictionaries_Quick.php
        and more...