I know www stands for world wide web, my site has wwww before it (see pic below). What does that stand for? http://www.imagechicken.com/viewpic.php?p=1270484553000141500&x=jpg
LOL! thats quite funny, doesn't stand for anything, google generally shows just the domain without the www part, and your website is setup to redirect all subdomains to a single site, and for some reason google has found that link.
It does not stand for anything indeed. It it just a subdomain, probably mis-configured within your DNS server.
At the end of the day it doesnt matter what you have as the host part; anythingyoulike.yourdomain.com If this is your site it may be that you made a typo when you set this up. It wont stop it from working but it can be easier for other people to remember if they want to go straight to your site (not through search engines or other referals) to stick to www as the hostname.