Words are Symbols Too

AskOxford - the free online dictionary resource from OUP
Search the Compact Oxford English Dictionary online; get answers to questions on English, language, grammar, spelling, quotations, and usage; find out about OUP dictionaries; improve your writing skills; try word games, crosswords, and puzzles; win books in prize draw; learn French, German, Spanish, Russian, Greek, Japanese, and Italian.
askoxford.com/

Alan Cooper's Homonym List
The best part about homonyms is that they are the raw material for puns, a truly sublime form of humor. With a robust knowledge of and appreciation for homonyms, you will never be embarrassed when a pun-battle breaks out in public.
cooper.com/alan/homonym_list.html

Babble: The Wordgame Superchild of Scrabble and Boggle
Search the puzzle board for words of four letters or more. When you find a word, add it to your list using the form below the puzzle.
playbabble.com/

RhymeZone rhyming dictionary and thesaurus
A language arts reference tool and comprehensive search engine for words. Includes the functions of a rhyming dictionary, thesaurus, and spelling checker, as well as an integrated full-text search engine for all of Shakespeare's works and thousands of quotations and poems.
rhymezone.com/

Symbols - TalkSense
The very language we use is symbolic and, although we may believe each word to be transparent, the vast majority are actually opaque.
talksense.weebly.com/symbols.html

Words are symbols for concepts
Words are symbols for concepts. Concepts catagorize experience. Experience provides knowledge. Knowledge is expressed in words that are symbols of concepts.
unique-design.net/library/word/word.html

World Wide Words
More than 1600 pages on the origins, history, evolution and idiosyncrasies of the English language worldwide. New words and words in the news are regularly featured.
worldwidewords.org/index.htm