The search function helps a lot, there were a lot of words I didn't know but I found people explaining their meanings in other threads. If it's a more obscure word, usually someone has already asked about its meaning.
BTW, if you didn't know already, the late Sheldon Brown (as seen above) has a great bike glossary along with a website with almost everything you need to know about bikes:
http://www.sheldonbrown.com/glossary.html