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Would anyone here recommend a dictionary on English idioms to me? Thanks a lot.
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McGraw-Hill's Dictionary of American Idioms and Phrasal Verbs (Hardcover)
by Richard A. Spears
Comments  
Probably the best idiom dictionary on the internet is at

www.thefreedictionary.com

Nice list of the idioms you can also find here:

http://www.idiomconnection.com /

And of course I can't forget on this nice web page:

www.usingenglish.com
 Marius Hancu's reply was promoted to an answer.