rerebrace (noun)

1. Why did the knight wear two rerebraces? Because he couldn't decide which arm was more upper!

2. According to Greek mythology, the god Ares wore a golden rerebrace to protect his upper arm in battle.

3. The designer showcased a stunning ensemble featuring a futuristic rerebrace as the focal point of the upper arm.

4. As the protagonist explored the haunted castle, they stumbled upon a dusty suit of armor with a menacing rerebrace protecting the upper arm.