There is one already; mouse over Help in the upper right blue band with the Flyertalk header, use the Glossary. Or, from the FAQ or ANNOUNCEMENT, go to the AA FluerGuide Wiki and select the Glossary there - which is extensive and has a bit more of AA-specific acronyms.

Here, I recommend making use of extensive information already shared by members:

MileSAAver / SAAver Award Availability - Assistance & Discussion (consolidated)

AA and Partner Airline Award info, rules (NOT for oneworld Explorer Awards) 2014 on

NEW oneworld / AA Explorer awards using AA Miles (NOT for Partner Awards)

Help understanding BA fuel surcharge / YQ (AA award on BA, consolidated)

These can all be accessed via the FAQ thread that is "stuck" to the front page, or using Advanced Search - for that and how to use Google (and a handy form from a member^) see the Announcement: NEWCOMERS: PLEASE READ FIRST. There is a lot here, and it can be found with a modicum of effort. Good luck!