The Free Dictionary
This is a comprehensive dictionary covering multiple languages: English, Spanish, German, French, Italian, Chinese, Portuguese, Dutch, Norwegian, Greek, Arabic, Polish, Turkish, Russian, Medical, Legal, and Financial Dictionaries. It is also a Thesaurus, Acronyms and Abbreviations, Idioms, Encyclopedia, a Literature Reference Library, and a Search Engine all in one!
Visuwords™ online graphical dictionary
Look up words to find their meanings and associations with other words and concepts. Learn how words are related to each other. Find synonyms and antonyms.
ATLASES AND MAPS
The Owl and the Mouse
Grolier Online Atlas
National Geographic Map Machine
Satellite, street maps and more in this online atlas.
Map collection from University of Texas
A large number of maps of all countries - historic maps also included.
Old Maps Online
Google Maps technology but with Historical Maps. Where: Reference/ Maps.