Nag
A worn out horse is a hack or a jade Nag is another word used
The safety jacket worn when riding a horse is called a body protector or a safety vest. It is designed to reduce the risk of injury to the rider's torso in case of a fall or impact while riding.
The term "plug" is often used to describe a low-quality or worthless horse due to its dull appearance and lack of desirable traits. It may also refer to a horse that is worn out and no longer useful for its intended purpose.
jeans
If a horse has worn a horse rug while being ridden, the rug should be lifted and removed and the horse should be brushed where the horse rug was worn. The rug should be place on something that would allow it to get good ventilation to air dry.
If they are sturdy country boots they can be worn to ride in.
From a horse? A Blacksmith...
A run down horse is a horse that is either poorly cared for, resulting in a ill, scruffy looking, stubborn horse or a worn out horse. Hope this helps!
Coronet is the answer.
Jodphurs
The eye shield of a horse is called a fly mask, which helps protect their eyes from insects and debris while out in the pasture or during turnout. It is designed to be lightweight and breathable for the horse's comfort.
My horse is called Todd