Dictionary of Philosophy of Mind  
   Most interesting dictionary of mental phenomena.
   http://www.artsci.wustl.edu/~philos/MindDict/main.html

Dictionary of Universal Spiritual Terms  
   Glossary of terms of universal spirituality including Buddhism, meditation, Shamanism, Islam, and Christianity.
   http://www.innerself.com/Magazine/Spirituality/dictionary_spirituality.htm

Silva Rhetoricae: The Forest of Rhetoric  
   Reference to over 1000 rhetorical terms and a primer for classical and renaissance rhetoric. Each term is accompanied by pronunciation, etymology, definition, examples from literature, cross references, and sources.
   http://humanities.byu.edu/rhetoric/silva.htm

A Dictionary of PostmodernTerms  
   A growing dictionary of terms useful in reading postmodern works.
   http://www.california.com/~rathbone/lexicon.htm

World Civilizations  
   Glossary of key concepts in various world civilizations and major eras from Washington State University.
   http://www.wsu.edu/%7Edee/GLOSSARY/GLOSSARY.HTM

Literary Terms  
   Glossary of common literary terms with references to published works where examples of these terms may be found.
   http://www.virtualsalt.com/litterms.htm

Figures of Speech Tables  
   Provides definitions of various figures of speech in English along with examples from literature of the period.
   http://www.nipissingu.ca/faculty/williams/figofspe.htm

Lexicon of Humanities  
   Site features basic glossaries, quotations, and bibliographies per discipline.
   http://www.sil.org/~radneyr/humanities//index.html

The Ism Book  
   A Field Guide to the Nomenclature of Philosophy.
   http://www.saint-andre.com/ismbook/

Prototype Worlds  
   Glossary of jargon and terminology originally coined in science fiction to describe technologies that did not exist at the time of writing or ideas for which no obviously suitable mainstream term was handy.
   http://catb.org/%7Eesr/sf-words/index.html

Glossary of Poetic Terms  
   Comprehensive glossary of poetic terms organized by poet, title, first line, timeline, keyword or simple alphabetical index maintained by members of the Department of English at the University of Toronto.
   http://eir.library.utoronto.ca/rpo/display/