Simple Definition:

Podiatry is a branch of medicine that focuses on diagnosing and treating foot and ankle problems. A podiatrist is a healthcare professional who specializes in this field and helps patients with conditions such as foot deformities, nail disorders, and foot injuries. For example, if you have a painful ingrown toenail, you may see a podiatrist who can provide treatment to alleviate your discomfort.

Very Simple Definition:

Podiatry is a type of medical care that helps people with problems in their feet. A podiatrist is a doctor who helps fix foot problems, like a painful toenail.