Dictionaries for ESL 

English Dictionaries

• OneLook Dictionaries

• YourDictionary.com

• Dictionary.com

• Diccionarios.com

• Cambridge Dictionary of American English

American Slang Dictionaries  

• The Online Slang Dictionary                     

• Common American Slang

• ESL Slang Page

• Dictionary of American Regional English

• College Slang Around the World    

• Slang Dictionary