Dictionaries

• Brewer's Dictionary of Phrase and Fable
  Includes over 18,000 entries that reveal the etymologies, trace the origins and otherwise catalog “words with a tale to tell.”
• Merriam-Webster Dictionary and Thesaurus
  An online dictionary for Merriam-Webster, America's foremost publisher of language-related reference works.
• OneLook Dictionary Search
  Searches 745 dictionaries on various subjects with one click.
• Medical Dictionary
  A goldmine of good health information from the world's largest medical library, the National Library of Medicine.