Squirreling Away Eggcorns

"The linguists at Language Log have coined the word eggcorn. An eggcorn is created by speakers (or writers) who, when searching for a word the meaning and pronunciation of which they know but the etymology and the spelling of which they have forgotten or never learnt, come up with a form they contrive based on recogizable lexical items that provide the meaning they are after. Eggcorn itself is an eggcorn: Someone, somewhere didn’t quite know how to spell acorn and thought that an egg-shaped seed would most likely be called an egg corn."

from http://kastalia.free.fr/serendipity/index.php?p=22

More about eggcorns...

http://www.rockymountainnews.com/drmn/news_columnists/article/0,1299,DRMN_86_3126444,00.html