ARRL - http://www.arrl.org/ham-radio-glossary
armchair copy - easily copied,
antenna system - any equipment following transmitter's output up to and including the antenna. In some cases this may include RF ground equipment depending on the antenna type in use.
CW abbreviations - http://www.radiotelegraphy.net/prosigns.htm
DX - a long distance contact usually to another continant or some folks say over a 1000 miles
elmer - mentor
ERP - Effective Radiated Power, the sum of the gains and losses of the transmitter's power output that is transferred to the air by an antenna system
FB - Fine Business (very good, good idea, excellent)
home brew - home made
Mic fright - being reluctance to make that first contact
QSO - talking or making a contact. For more see this List of Amateur Qsigns
QSL - I understand or do you understand, also a cards ham exchange to confirm contacts
silent key (sk) - deceased, sometimes with a call sign such as "W7ORB, sk"
FOR LOOK AT HAM SPEAK FROM A HISTORICAL PERSPECTIVE SEE http://www.ac6v.com/73.htm