armiger

from WordNet (r) 3.0 (2006)

armiger
    n 1: a squire carrying the armor of a knight [syn: {armiger},
         {armor-bearer}]
    2: a nobleman entitled to bear heraldic arms

from The Collaborative International Dictionary of English v.0.48

Armiger \Ar"mi*ger\, n. [L. armiger armor bearer; arma arms +
   gerere to bear.]
   Formerly, an armor bearer, as of a knight, an esquire who
   bore his shield and rendered other services. In later use,
   one next in degree to a knight, and entitled to armorial
   bearings. The term is now superseded by esquire. --Jacob.
   [1913 Webster]