Oxford Idioms Dictionary:

This edition of the Oxford Idioms Dictionary has been enlarged and updated to reflect the English of the 21st century. The book contains over 10,000 British and American idioms that are frequently used by native speakers. Simple definitions help learners understand what the idioms mean and corpus-based examples show how idioms are used in everyday English. Clear links guide learners to the idioms they need and interesting notes explain the origin of many of them. Usage notes give information on vocabulary or grammar and there are illustrations for many of the more colouful, everyday idioms. An additional section of study pages and exercises gives learners practice in using the most frequent idioms naturally.