bracer

rannesuoja

rohkaisuryyppy That which braces, binds, or makes firm; a band or bandage.
puhekieltä A covering to protect the arm of the bowman from the vibration of the string.
1786, Francis Grose, A Treatise on Ancient Armour and Weapons, page 34:

To prevent the bow string from hanging on the left arm, it is covered with a piece of smooth leather, fastened on the outside of the arm, this is called a bracer.