Go.English.Com: Pocket English Idioms. GoEnglish.com teaches the meaning of English idioms and phrases. For native and non-native English speakers of all ages. An excellent idioms dictionary. Each entry has a great drawing to illustrate the idiom. You'll find easy-to-understand definitions and examples. Use the search box or click on one of the keywords to find an idiom.
Heinle's Newbury House: Dictionary of American English. Contains over 40,000 entries. The All-In-One Essential Tool for English Language Learning Heinle's Newbury House Dictionary of American English contains over 40,000 entries. Simple, clear definitions that provides a wealth of sample sentences and idioms.
HyperDictionary.com: English, Computer, Dream and Medical dictionaries. Contains also a Thesaurus. HyperDictionary.com is a continuation of an educational project to provide free dictionary services to any user on the web. The current version of HyperDictionary.com is new and improved both in design and content.