The Oxford English Dictionary (OED) is widely regarded as the accepted authority on the English language. It is an unsurpassed guide to the meaning, history, and pronunciation of 600,000 words— past and present—from across the English-speaking world. Access is provided by the College Libary.
An "idiom" is a group of words established by usage as having a meaning not deducible from those of the individual words. This volume takes a fresh look at the idiomatic phrases and sayings that make English the rich and intriguing language that it is. This major new edition contains entries for over 6,000 idioms, including 700 entirely new entries, based on Oxford's language monitoring and the ongoing third edition of the Oxford English Dictionary. These include a range of recently established idioms such as ‘the elephant in the corner’, ‘go figure’, ‘like a rat up a drainpipe’, ‘sex on legs’, ‘step up to the plate’, ‘too posh to push’, ‘a walk in the park’, ‘win ugly’. This edition also features a greatly increased number of cross-references, making it ideal for quick reference.
In general usage, a thesaurus is a reference work that lists words grouped together according to similarity of meaning (synonyms) & opposite meaning (antonyms), in contrast to a dictionary, which provides definitions for words, and generally lists them in alphabetical order