Wordnet 3.0
NOUN (1)
1. 
 armor plate that protects the arm; 
The Collaborative International Dictionary of English v.0.48:
brassard \brassard\ n.
   an armor plate that protects the arm.
   [WordNet 1.5]
WordNet (r) 3.0 (2006):
brassard
    n 1: armor plate that protects the arm