ag

from WordNet (r) 3.0 (2006)

Ag
    n 1: a soft white precious univalent metallic element having the
         highest electrical and thermal conductivity of any metal;
         occurs in argentite and in free form; used in coins and
         jewelry and tableware and photography [syn: {silver}, {Ag},
         {atomic number 47}]

from The Free On-line Dictionary of Computing (8 July 2008)

ag

   <networking> The {country code} for Antigua and Barbuda.

   (1999-01-27)