Try the Chambers Dictionary (Larousse)
The Oxford English Dictionary with more than 600,000 words is the largest English to English dictionary.
Some British dictionaries are: The Oxford English Dictionary The Chambers Dictionary The Collins Dictionary Cassell's English Dictionary
If English Dictionary, the English Dictionary by World Book is great.
The English and French dictionary
The British dictionary have British English and the Webster dictionary have American English
English Dialect Dictionary was created in 1898.
Oxford Dictionary of English was created in 1998.
Oxford English Dictionary was created in 1989.
A New English Dictionary was created in 1702.
The best English Farsi dictionary is Aryanpour English Farsi dcitionary
Try English to Bengali Dictionary Bengali to English and English Dictionary at http://www.bdword.com . It is an Online Bangla Dictionary. So you do not need to install any software to use it.
The Oxford English Dictionary (OED) is considered the most extensive English dictionary, containing over 600,000 words and tracing their origins and historical usage back over a thousand years. It is a comprehensive resource for understanding the evolution of the English language.