Noun
sword arm (plural sword arms)
(fencing) The arm in which one's sword is normally held.
Offensive * Attack : A basic fencing technique, also called a thrust, consisting of extending the sword arm to declare an attack and attempt to land a touch upon the opponent's valid area. Source: Internet
Such modern duels were not fought to the death, the duellists' aim was instead merely to draw blood from the opponent's sword arm. Source: Internet
This guard is generally turned outwards during sport to protect the sword arm from touches. Source: Internet