The Collaborative International Dictionary of English v.0.48:

Anglo-Norman \Anglo-Norman\, a.
   Of or pertaining to the English and Normans, or to the
   Normans who settled in England.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Anglo-Norman \Anglo-Norman\, n.
   1. One of the English Normans, or the Normans who conquered
      England.
      [1913 Webster]

   2. the French (Norman) language used in medieval England.

   Syn: Anglo-French
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

Anglo-Norman
    n 1: the French (Norman) language used in medieval England [syn:
         Anglo-French, Anglo-Norman]