Useful site for studying idioms. It gives simple and accurate definitions to a good range of idioms.
An Online dictionary providing instant lookup and translations of word and phrase definitions, complete with images. To use the dictionary, simply type a word in the search box that appears at the top of every page and click the ‘Search’ button.
The site, Eye on Idioms (hosted by Read Write Think), offers a way to practice identifying and using idioms. It presents students with an incomplete sentence that they need to complete by selecting the proper idiom from a drop-down menu. To help student select the correct idiom, Eye on Idioms provides a picture hint. After selecting the correct idiom, Eye on Idioms asks students to answer a couple of short questions about the meaning of the idiom.
This is a clever site. This tool offers a useful service that is part dictionary and part thesaurus. It displays related words, hierarchies & definitions and simple to use. Enter a word into Word Sense and it will show you the definition(s) for the word as well as the connections to associated and similar words. You can see any of the definitions of the connected words by simply clicking on them to pop-up a definition.
Great image showing how absurd the English language can seem to those who are trying to learn it